WO2019203570A1

WO2019203570A1 - Construction contract and payment management system

Info

Publication number: WO2019203570A1
Application number: PCT/KR2019/004647
Authority: WO
Inventors: 나현웅
Original assignee: 주식회사 코헴
Priority date: 2018-04-19
Filing date: 2019-04-17
Publication date: 2019-10-24

Abstract

A construction contract and payment management system is disclosed. The system comprises: a contractor contract management unit for managing information on the contractor contract formed in a multi-level structure between an owner company, a general contractor, and a plurality of subcontractors for construction work; a rental contract management unit for managing information on the construction machine rental contract between the general contractor or the subcontractor and a plurality of equipment suppliers that own construction machines; a contract relationship management unit for generating information on the overall contract relationship between the owner company, the general contractor, the plurality of subcontractors and the plurality of equipment suppliers on the basis of the contractor contract information and the construction machine rental contract information; and a payment management unit for processing a payment so as to successively and automatically pay, from the general contractor to the plurality of subcontractors and equipment suppliers, a contract price according to the contractor contract information and the construction machine rental contract information in the contract information when the general contractor is paid by the owner company. [Representative drawing] Figure 3

Description

Construction contract and payment management system

The present invention relates to a technology for construction management, and more particularly, to a technology for managing construction contract relations and payment.

As is well known, the contract structure of construction works shows that the first client (or implementer) who plans a construction contracts with a contractor, a general contractor (contractor), and a general contractor ( Contract with the first subcontractor), and the specialized construction company is made up of multi-level subcontracting structure with other contractors (second subcontractor). Under this multi-level subcontracting structure, subcontractors bill the contractor for the cost of the construction, and the contractor adds the subcontracting cost to the client's bill. The client pays monthly billing costs on the contracted date, i.e. the off-the-shelf amount, and confirms the payment at each stage. In other words, if the client pays the construction cost to the contractor, the contractor should pay the contractor within 15 days of the billed construction fee and notify the client of the payment within 5 days after the payment. In addition, the first subcontractor must pay the construction subcontractor to the second subcontractor after receipt of the construction payment and notify the owner of the payment within 5 days after the payment.

This process is applicable to all subcontractors at each level, which exposes three major problems. First, the verification and notification procedures for payment are complex and redundant. Billing and verification in subcontracting steps takes a lot of labor and time, and a copy of the bankbook and various documents must be submitted each time to verify payment. Secondly, it is difficult to grasp the status of all suppliers in stages, even though the task is overlapped. This is because it is difficult to manage the status of subcontractors even though subcontractors do not have any management of the top contractors after paying off-the-shelf. The third and most important is the payment delay caused by the complicated process of paying each stage of construction. Since the payment is within 15 days of each phase, the subcontractor of the last phase will receive payment much later than the date on which the initial payment was made. In the meantime, problems that arise, such as companies being paid for construction and being used for other purposes or being locked out, cannot be dealt with. The Fair Trade Commission payday is less than 60 days after the working day, but in many cases this is not the case.

[Preceding technical literature]

[Patent Documents]

Domestic Publication No. 10-2009-0051354 (published May 22, 2009)

An object of the present invention is to provide a system that allows payment to be paid to the operators involved in the construction work quickly.

According to one aspect, the construction contract and payment management system owns a contract contract management unit, subcontractor or subcontractor and construction machinery that manages contract information of a multi-level structure between the client, the subcontractor, and a plurality of subcontractors for construction. A lease contract management unit that manages construction equipment lease contract information between a plurality of equipment operators, and overall contract relationship information between an ordering company, a subcontractor, a plurality of subcontractors, and a plurality of equipment providers based on contract information and construction equipment rental contract information. When the payment is paid to the contractor from the contract relationship management unit and the contractor that generates the contract, the contract value according to the contract contract information and the construction equipment lease contract information is automatically provided sequentially to the plurality of subcontractors and equipment operators from the contractor. To include a payment management unit Can be.

When the payment is paid from the ordering company to the subcontractor, the subcontractor is transferred to the financial accounts of the subcontractors and the equipment operators respectively based on the contract contract information and the construction equipment lease contract information. The transfer request to the financial company server and the plurality of subcontractor's financial company server, according to the contract relationship information can be requested in sequence to the subcontractor's financial company server and the plurality of subcontractor's financial company server.

The payment management unit receives notification of the completion of the transfer from the financial institution server and manages the payment status, and when receiving the transfer completion notification, may request the next transfer to the financial institution server.

The construction contract and payment management system further includes a bill management unit that manages the electronic tax invoice billed for a plurality of subcontractors and contract fees by a plurality of equipment operators, and the bill management unit sequentially requests transfers according to contract relationship information. You can request a transfer only if the subcontractor or equipment operator who is going to transfer the fee has issued a bill of electronic tax invoice.

The construction contract and payment management system further includes a storage unit for storing the electronic contract for construction machinery, and the lease contract management unit uses the electronic contract stored in the storage unit to conclude an electronic contract between a user who is a subcontractor or a subcontractor and an equipment contractor. Management information as a construction equipment lease contract, and the user's approval data for the completion of the equipment operator's work in accordance with the contracted electronic contract is reflected in the electronic contract, and the billing management unit to the construction company lease contract information to the financial company's server In case of payment transfer to the relevant equipment provider, the transfer can be requested only when the approval data of the user is reflected in the electronic contract.

The lease contract management unit receives the rental operator's work completion data and the approval data for the completion of the user's work from the equipment operator's device after the equipment operator's work is completed according to the contracted electronic contract, and reflects them in the electronic contract or concluded the electronic contract. Receive the work completion data from the equipment operator's device after the equipment operator's work is completed and notify the completion of work of the equipment operator to the user equipment and receive the approval data for the work completion from the user equipment, The approval data for this can be reflected in the electronic contract.

The contract relationship management unit generates the entire contract relationship information in a visual hierarchical structure based on the contract contract information and the construction equipment lease contract information, and provides the generated contract relationship information to the registered operators. have.

The present invention ensures that payment to subcontractors and equipment operators is made quickly when the payment is made from the ordering company to the subcontractor, thereby preventing the payment delay, which is a serious problem in the construction industry.

In addition, the present invention provides members with a contract relationship between companies having a multi-level subcontract structure, so that even a subcontractor and an equipment provider can grasp the overall contract relationship and check the payment status.

1 is a diagram illustrating a multi-level contract structure for construction.

2 is a block diagram of a construction contract and payment management system according to an embodiment.

3 is a block diagram of a management server according to an exemplary embodiment.

4 is a diagram illustrating a contract relationship tree structure according to an embodiment.

5 is a block diagram of a construction contract and payment management system according to another embodiment.

The foregoing and further aspects of the present invention will become more apparent through the preferred embodiments described with reference to the accompanying drawings. Hereinafter, the present invention will be described in detail to enable those skilled in the art to easily understand and reproduce the present invention.

1 is a diagram illustrating a multi-level contract structure for construction. As shown in FIG. 1, the subcontractor and the plurality of subcontractors (primary subcontractors, ..., N subcontractors) and various small businesses (materials providers, equipment providers, construction workers, etc.) Construction is accomplished by entering into a contract and performing the work under that contract. In addition, the ordering institution pays the price to the subcontractor (original subcontractor) on the set payment date according to the contract, and the subcontractor pays the remaining subtracted amount except the share of the paid amount to the subcontractor (subcontractor) and the subcontractor in contract. do. In addition, the first subcontractor also pays the second subcontractor and small business owners, excluding their share of the payment. In this way, the total amount paid from the ordering institution to the subcontractor (top business) is sequentially paid to the bottom business according to the contractual relationship. At this time, the sequential payment is immediately made by the contract payment delay prevention system to be described later, the construction cost payment problem is solved.

For reference, the contractor (the subcontractor or subcontractor) who made a contract from the perspective of the small business may be a use business operator. Equipment leased by equipment operators includes construction machinery (e.g. excavators, dumpers, forklifts, loaders, cranes, concrete pumps, dozers, rollers, road shredders, etc.) used in the construction work defined in the Construction Equipment Management Act and trucks Cranes, sprinklers, dumps under 15 tonnes, etc.).

2 is a block diagram of a construction contract and payment management system according to an embodiment. The construction contract and payment management system may be made of only some of the components shown in FIG. 1. For example, the construction contract and payment management system means only the management server 200. The financial system includes a financial company server 100 operated by financial institutions such as one or two different banks, and provides a transaction service such as an account transfer service or an automatic transfer service. Therefore, client companies, contractors and small business owners can sign up for financial services and use transaction services. The management server 200 is a server system including one or more servers. The management server 200 is operated by a separate provider (hereinafter referred to as "payment agency") that provides a service so that the payment to be paid to the operators can be quickly paid.

The management server 200 automatically processes the payment to be paid to the operators in conjunction with the financial company server 100. Herein, the term "business operators" refers to contractors and small business owners in FIG. 1, and the owner may also be included in the business operators, and the subcontractors and small business owners may be referred to as cooperative businesses. The management server 200 is interlocked with the financial company server 100 so that the corresponding payment according to the contract to the subcontractors and small businesses when the payment is paid from the client to the subcontractor in sequence. In other words, the management server 200 is paid to the subcontractor from the ordering company (for example, ready-made funds, etc.), the subcontractor's share of the payments paid out of the remaining subcontractors and equipment operators Are involved in the payment so that the shares can be paid immediately. Through this, the problem of delayed payment to subcontractors and equipment operators can be solved. In addition, the management server 200 manages contract information between the contractor, the subcontractor and the plurality of subcontractors, manages the contract information for construction equipment between the contractors and the equipment operators, and subcontracts these contract information. And subcontractors so that subcontractors and equipment contractors can understand the overall contract structure of the construction work.

On the other hand, the operator device 300 is a device having a computing and communication function used by the owner, subcontractor, subcontractor or small business, respectively, for example, a computer or a smart phone. Such operator device 300 may be involved in the payment or electronic contract process.

3 is a block diagram of a management server according to an exemplary embodiment. The manager interface 210 is an interface for inputting and outputting the manager. The administrator may perform input, inquire, and edit necessary inputs to the management server 200 through the administrator interface 210, and execute all rights granted to the administrator, such as executing a specific program and monitoring execution contents. The network communication unit 220 supports one or more communication protocols. For example, the network communication unit 220 may include at least some of communication protocols such as TCP / IP, IPX, SPX, NetBIOS, Ethernet, ARCNET, Fiber Distributed Data Interface (FDDI), IEEE 802.11, IEEE 802.11a, and direct synchronization connection. Support. The management server 200 may use the network communication unit 220 to communicate data with the financial institution server 100 through an external network.

The storage unit 230 is storage for storing information managed by the control unit 240. The storage unit 230 stores and manages contract information and construction equipment lease contract information concluded between operators. In addition, the storage 230 may also be stored in the standardized electronic contract. This electronic contract may be used for a construction equipment lease agreement between the contractor and the equipment provider. In addition, the storage 230 may also store an electronic contract for a contract. In addition, the storage unit 230 may also store and manage the electronic tax invoice issued and billed for the price that the operators should be paid. In addition, the storage unit 230 may also be stored and managed member information, the operators related to the construction industry, such as contractors and equipment operators can be all members.

The controller 240 may be a combination of hardware and software including one or more processors. As shown in FIG. 2, the controller 240 may include a contract manager 241, a contract relationship manager 243, and a price manager 244, and may further include a bill manager 245. All of these configurations can be implemented in software and can be executed by a processor to perform a given role. The contract manager 241 manages one-to-one contract information between operators. In other words, the contract management unit 241 provides subcontract information between the contractor and the subcontractor, subcontract information between the subcontractor and the subcontractor, subcontract agreement information between the subcontractor and the subcontractor, and material supply / equipment lease between the subcontractor and the subcontractor. Comprehensive management of labor service contract information The contract information may also include account information for payment.

The contract manager 241 may include a contract contract manager 241-1 and a lease contract manager 241-2. The contract management unit 241-1 manages one-to-one contract information between the client, the subcontractor, and the plurality of subcontractors. In other words, the contract management unit 241-1 comprehensively manages contract information between the client and the subcontractor, contract information between the subcontractor and one or more subcontractors, and one-to-one contract information between a plurality of subcontractors. . For example, the contract management unit 241-1 may include subcontracting information entered into between the client and the subcontractor, subcontracting information entered into between the first subcontractor and the second subcontractor, and the second subcontractor with the third subcontractor. It is to comprehensively manage the subcontracting contract information concluded between subcontractors. The contract information may include payment date and financial account information, and the financial account information may include only the receivable account information of the paying party among the contracting parties or the remittance account information of the paying party. In one embodiment, the contract management unit 241-1 concludes the contract using the contract for contract electronic contract stored in the storage 230, and stores the contract information contract information generated in accordance with the contract contract (storage unit) 230 to manage. In another embodiment, the contract management unit 241-1 generates contract information by generating data through a method of directly inputting the contract contract content concluded on-line from an administrator, and stores and manages the contract information in the storage unit 230. .

The lease contract management unit 241-2 manages construction equipment lease contract information between a plurality of contractors who are subcontractors or subcontractors and equipment operators each owning a construction machine. In other words, the lease contract management unit 241-2 comprehensively manages construction equipment lease contract information between the subcontractor and one or more equipment providers and one-to-one construction equipment lease contract information between the plurality of subcontractors and the plurality of equipment providers. For example, the lease contract management unit 241-2 may include information about the construction equipment lease agreement between the subcontractor and the primary equipment provider, construction equipment lease agreement information between the primary subcontractor and the secondary equipment provider, and 2 It is to comprehensively manage the construction equipment lease agreement information between the subcontractor and the third equipment provider, and the construction equipment lease agreement information between the third subcontractor and the fourth equipment provider. The construction equipment lease contract information may include payment date and financial account information, and the financial account information may include only the receivable account information of the paying party among the contracting parties or the remittance account information of the paying party.

The contract relationship management unit 243 generates total contract relationship information between the ordering company, the contractors, and the equipment operators with the contract information and the lease contract information stored in the storage 230. That is, the contract relationship management unit 243 generates contract relationship information indicating the contracting and construction equipment lease relationship of all the companies participating in the construction work to be carried out based on the contract information and the lease contract information. In one embodiment, the contract relationship management unit 243 generates contract relationship information representing a contract relationship and a construction equipment lease relationship in a visual hierarchical structure based on the contract information and the lease contract information. The contract relationship management unit 243 stores and manages the contract relationship information in the storage unit 230, and when the contract contract information or the construction equipment lease contract information changes, the contract relationship information is also updated accordingly.

The contract relationship management unit 243 provides the contract relationship information to the member. Here, the member may be a contracting party or a member which is not related to the contract. That is, contract relationship information may be provided to all members. Contract relationship information shown in visual hierarchical structure is illustrated in FIG. 4. Through this, even the subcontractor or equipment operator can know the overall subcontracting system. For example, until now, equipment operators who contracted with third-party subcontractors did not know the second subcontractor or orderer that contracted with the third-party subcontractor. As a result, when the equipment rent was not paid, it had to be more difficult, but according to the above, this problem can be solved.

When the payment is paid from the client to the subcontractor, the payment management unit 244 processes the contract price according to the contract information and the construction equipment lease contract information in the contract information to be sequentially and automatically paid to the plurality of subcontractors and equipment operators from the subcontractor. do. In one embodiment, the financial company server 100 notifies the management server 200 when the payment is deposited from the client account to the original contractor account, the bill management unit 244 is in contract with the original contractor through the contract information 1 The subcontractor checks the small business and requests the financial institution server 100 to transfer the corresponding price according to the contract to each of the confirmed first subcontractor's account and the small business's account. Accordingly, the financial institution server 100 notifies the management server 200 of the transfer completion after processing the transfer according to the request, the price management unit 244, the second subcontractor and the small business contractor who has a contractual relationship with the primary subcontractor Check and ask the financial institution server 100 to transfer the corresponding price according to the contract to each of the confirmed second subcontractor's account and the small business account. That is, the price management unit 244 instructs the contract price transfer of the next step when the contract price transfer is notified from the financial institution server 100. By repeating the above procedure, all payments can be quickly transferred to the lowest-ranking operators and payment can be completed. In addition, the payment management unit 244 may manage the payment status according to the payment receipt response or transfer completion notice, and the contract relationship management unit 243 may manage the payment status managed by the payment management unit 244. Can be reflected in the information.

On the other hand, in order for the payment management unit 244 to request the financial institution server 100 to make the transfer, the payment agent must have a transfer authority for payment from the account of the operator on behalf of the operator only for the construction price. Information about such transfer authority may be included in the contract information, and the authority may not be authorized by the settlement agent by a bilateral agreement between the operator and the payment agent or by a three-party agreement between the operator and the payment agent and the financial company. Can be given.

The bill management unit 245 is a component for issuing and managing electronic tax invoices of members, and stores and manages the electronic tax invoices issued and billed for the contract price to be paid for each operator in the storage 230. In this case, the price management unit 244 automatically process the payment of the contract to be paid to the operator in accordance with the contract information in sequence, but when the storage unit 230 is found that the operator claims to issue the electronic tax invoice Only in conjunction with the financial company server 100 is processed to pay the contract price. That is, the price management unit 244 requests a transfer only when the subcontractor or equipment operator who receives the payment claims and issues an electronic tax invoice when the transfer request is made to the financial institution server 100 according to the contract relationship information. If not, skip to the next transfer step. In other words, for businesses that do not issue and issue electronic tax invoices, payment is delayed until they are issued.

On the other hand, the lease contract management unit 241-2 manages the lease contract information by signing an electronic contract for the construction equipment rental between the user and the equipment operator using the electronic contract for the construction equipment rental contract stored in the storage unit 230 can do. The electronic contract concluded may include equipment operator information, operator information, information on the type of rental construction equipment, payment (lease), work date and work location. In addition, when the equipment operator completes the work according to the concluded electronic contract, the lease contract management unit 241-2 may obtain the approval data of the user for the completion of the work and reflect it in the electronic contract.

For example, if an electronic contract is signed between a subcontractor A and a B equipment contractor with an electronic contract for construction equipment, the B equipment contractor will perform work at the work place on the working date according to the electronic contract. When the work is completed, the B equipment provider requests the electronic contract to the management server 200 by using a communication device (B device). The management server 200 searches for the electronic contract managed as construction equipment lease contract information in the storage unit 230, and delivers the retrieved electronic contract to the B device. Thus, B equipment enters that it has completed the work specified in the electronic contract displayed on B equipment. The A operator at the work site is requested to input the B device for approval of completion of the work, and the A user inputs the B device to approve that the work according to the contract is completed. The device B transmits the work completion data input from the B equipment operator and the work completion approval data input from the A user to the management server 200, and the lease contract management unit 241-2 receives the work completion data and the work completion approval data. In the electronic contract. In addition, the lease contract management unit 241-2 may transmit the contents of the electronic contract reflecting the work completion data and the work completion approval data to the communication device (A device) of the A user.

However, because there is no operator at the work site, equipment B may not receive approval for completion of work on equipment B directly from operator A. This case will be described. First, the device B requests the electronic contract to the management server 200. Accordingly, the lease contract management unit 241-2 of the management server 200 retrieves the electronic contract from the storage unit 230 and delivers the retrieved electronic contract to the B device. The B operator enters that the work specified in the electronic contract displayed on the B device has been completed. The device B transmits the work completion data to the management server 200, and the lease contract management unit 642 of the management server 200 that has received the work completion data notifies the device A that the work is completed. Accordingly, the A user inputs the work completion approval into the device A, and the device A transmits the work completion approval data to the management server 200. Then, the lease contract management unit 241-2 of the management server 200 reflects the work completion data and the work completion approval data in the corresponding electronic contract.

In relation to the above work completion approval, the price management unit 244 may request a payment or transfer of payment only when the equipment completion approval data is reflected in the electronic contract for the equipment provider when the transfer request to the financial company server 100. In other words, if the work completion approval data is not reflected, the service provider is excluded from receiving the payment so that payment is not made. If the work completion approval data is reflected thereafter, the transfer request is requested.

On the other hand, another embodiment of the price management unit 244 will be described. For convenience of description, refer to FIG. 5. FIG. 5 is a block diagram illustrating a construction contract and payment management system. The difference from FIG. 2 is that the operator device 300 of FIG. The price management unit 244 sequentially requests payment to the subcontractor device 310-1 and the subcontractor devices 320-1, 320-2, and 320-3 according to the contract relationship information. That is, the price management unit 244 pays the subcontractor the first subcontractor for the subcontractor information and the subcontractor device 310-1 for the subcontractor. Ask to do. Subsequently, the price management unit 244 pays the first subcontractor device 320-1 to the second subcontractor for the subcontractor's payment and the subcontractor for the subcontractor's information to the subcontractor. Ask to be paid to. Subsequently, the price management unit 244 pays the second subcontractor device 320-2 to the third subcontractor for the subcontractor's information and the third subcontractor for the subcontractor's information. Ask to be paid to. Subsequently, the price management unit 244 requests the third subcontractor device 320-3 to pay the fourth equipment operator the price according to the construction equipment lease contract information.

In such a sequential payment request process, whenever the sequential payment request is executed, the payment management unit 244 requests the payment recipient to confirm whether the payment has been received, and the next subcontract based on the contract relationship information only when the payment is received. You can request a payment to your device. For example, the payment management unit 244 requests payment to the first subcontractor device 320-1 and receives payment to the second subcontractor device 320-2 and the second equipment provider device 330-2. Request confirmation, and request payment to the second subcontractor device 320-2 only when the second subcontractor device 320-2 and the second equipment provider device 330-2 receive a payment. It is.

So far I looked at the center of the preferred embodiment for the present invention. Those skilled in the art will appreciate that the present invention can be implemented in a modified form without departing from the essential features of the present invention. Therefore, the disclosed embodiments should be considered in descriptive sense only and not for purposes of limitation. The scope of the present invention is shown in the claims rather than the foregoing description, and all differences within the scope will be construed as being included in the present invention.

[Description of the code]

100: financial company server 200: management server

210: manager interface 220: network communication unit

230: storage unit 240: control unit

241: Contract Management Department 241-1: Contract Contract Management Department

241-2: lease contract management unit 243: contract relationship management unit

244: money management 245: bill management

300: operator equipment

Claims

A subcontract management unit that manages subcontracting information having a multi-level structure between the client, the subcontractor, and the plurality of subcontractors for construction and construction;

A lease contract management unit that manages construction equipment lease contract information between a subcontractor or a subcontractor and a plurality of equipment operators who own construction machinery;

A contract relationship management unit generating overall contract relationship information between the contractor, the subcontractor, the plurality of subcontractors, and the plurality of equipment operators based on the contract information and the construction equipment lease contract information; And

If the payment is paid from the contractor to the subcontractor, the bill management unit to process the contract payment according to the contract information and construction equipment lease contract information in the contract information from the subcontractor to a plurality of subcontractors and equipment operators sequentially;

Construction contract and payment management system comprising.
The method of claim 1,

When the payment is paid from the ordering company to the subcontractor, the subcontractor is transferred to the financial accounts of the subcontractors and the equipment operators respectively based on the contract contract information and the construction equipment lease contract information. A construction contract and payment management system that requests transfer to a financial company server and a plurality of subcontractor's financial company servers, but sequentially requests to a subcontractor's financial company server and a plurality of subcontractor's financial company servers according to contract relationship information.
The method of claim 2,

The payment management unit receives a notification of the completion of the transfer from the financial institution server, manages the payment status, and upon receipt of the transfer completion notification, requests for the next transfer to the financial institution server.
The method of claim 2,

It further includes a bill management unit for managing the electronic tax invoice billing issued for a plurality of subcontractors and contract fees for a plurality of equipment operators;

The construction management and payment management system, which requests the transfer only when the subcontractor or equipment operator who receives the transfer charges and issues the electronic tax invoice when the transfer request is made sequentially according to the contract relationship information.
The method of claim 2,

Further comprising: a storage unit for storing the electronic contract for construction machinery,

The lease contract management department uses the electronic contract stored in the storage unit to establish an electronic contract between the user contractor and the equipment operator, which is a subcontractor or subcontractor, to manage the construction equipment lease contract information, and complete the work of the equipment operator according to the concluded electronic contract. Reflect the approval data of the licensee in the electronic contract,

The payment management unit requests the transfer to the equipment provider according to the construction equipment lease contract information to the server of the user's financial company, and requests the transfer only when the approval data of the operator is reflected in the electronic contract.
The method of claim 5,

The lease contract management unit receives the rental operator's work completion data and the approval data for the completion of the user's work from the equipment operator's device after the equipment operator's work is completed according to the contracted electronic contract, and reflects them in the electronic contract or concluded the electronic contract. Receive the work completion data from the equipment operator's device after the equipment operator's work is completed and notify the completion of work of the equipment operator to the user equipment and receive the approval data for the work completion from the user equipment, Construction contract and payment management system that reflects the approval data in the electronic contract.
The method of claim 1,

The contract relationship management unit generates the entire contract relationship information in a visual hierarchical structure based on the contract contract information and the construction equipment lease contract information, and provides the generated contract relationship information to the registered operators. Contract and payment management system.
The method of claim 1,

When the payment is paid from the ordering company to the subcontractor, the subcontractor is required to pay a portion of the payment to the subcontractors and the subcontractors for the construction equipment based on the contract contract information and the construction equipment lease contract information. A construction contract and payment management system for requesting payment to a device and a plurality of subcontractor devices, and sequentially requesting payment to the subcontractor device and the plurality of subcontractor devices according to the contract relationship information.
The method of claim 8,

The payment management department manages the payment status by requesting confirmation of receipt of payment to the subcontractor device and the construction equipment leasing company device after each request for payment, and manages the payment status. According to the construction contract and payment management system to carry out the payment request.