• ㆍ Deliver contracts, work orders, etc., containing legally required items* before work commencement.
  * ① Work content, ② Completion timing and location, ③ Inspection method and timing, ④ Payment method and due date, ⑤ When providing raw materials: quantity, provision date, payment method and due date, ⑥ Subcontract payment adjustment method according to supply cost changes
• ㆍ When receiving a written request for document issuance from subcontractors, respond in writing within 15 days of the request date.

• ㆍ Do not establish contract conditions that unfairly infringe or restrict subcontractors' interests.
• ㆍ Unfair Type 1: Agreements requiring matters not stated in writing
• ㆍ Unfair Type 2: Agreements transferring costs related to complaint handling, industrial accidents, etc. that are the prime contractor's burden
• ㆍ Unfair Type 3: Agreements transferring costs incurred from requiring matters not in bid specifications
• ㆍ Unfair Type 4: Agreements transferring to subcontractors matters without subcontractor responsibility, such as permits, environmental management, defect warranty, damage compensation responsibility that are prime contractor responsibilities, or matters unpredictable during bidding

• ㆍ Do not determine subcontract payments lower than the lowest bid amount.
• ㆍ For negotiated contracts, do not determine subcontract payments lower than direct construction costs*.
  * Sum of materials, direct labor, and expenses in the prime contract

• ㆍ Do not force purchase of specific goods without justifiable reasons.

• ㆍ When receiving advance payments from clients, pay them according to the content and ratio within 15 days from the receipt date..
• ㆍ When concluding subcontract agreements after receiving advance payments, pay advance payments within 15 days from contract date.
• ㆍ When exceeding legal deadlines, pay delayed interest at annual 15.5% (announced rate) for excess days.

• ㆍ Do not arbitrarily cancel contracts or refuse to receive or accept deliverables when there are no attributable causes to subcontractors.

• ㆍ Provide written notification of inspection results within 10 days of the progress inspection request date.

• ㆍ Do not return deliverables when there are no attributable causes to subcontractors.

• ㆍ Do not reduce payments when there are no attributable causes to subcontractors or without justifiable reasons.

• ㆍ Do not demand provision of money, goods, services, etc. without justifiable reasons.

• ㆍ Do not demand or misappropriate technical data without justifiable reasons.
• ㆍ When demanding technical data for justifiable reasons, issue technical data provision request forms containing legally required items* in advance.
  * ① Request purpose, ② Confidentiality matters including confidentiality methods, ③ Rights attribution relationships, ④ Compensation and payment methods, ⑤ Name and scope, ⑥ Request date, provision date, provision method, ⑦ Justification for technical data provision demands
• ㆍ When providing technical data, conclude confidentiality agreements containing legally required items* by the date of receiving technical data.
  * ① Name and scope, ② Usage period, ③ List of employees holding technical data, ④ Confidentiality obligations, ⑤ Prohibition of use for other purposes, ⑥ Compensation for violations, ⑦ Return and disposal methods and dates

• ㆍ Pay subcontract payments within 60 days from the deliverable receipt date or, if monthly tax invoice issuance dates are set, from the date specified.
• ㆍ When receiving payments from clients, pay subcontract payments within 15 days from receipt date.
• ㆍ When exceeding legal deadlines, pay delayed interest at annual 15.5% (announced rate) for excess days.

• ㆍ When entrusting export goods to subcontractors and receiving customs refunds, pay according to received content within 15 days from refund receipt date.
• ㆍ When exceeding legal deadlines, pay delayed interest at annual 15.5% (announced rate) for excess days.

• ㆍ When receiving design changes from clients, notify the design change facts within 15 days from the design change date.
• ㆍ When receiving design changes from clients, implement subcontract modifications within 30 days from the design change date.
• ㆍ When receiving design change payments from clients, pay corresponding amounts within 15 days from the receipt date.
• ㆍ When exceeding legal deadlines, pay delayed interest at annual 15.5% (announced rate) for excess days.

• ㆍ When subcontractors request subcontract payment adjustments due to deliverable supply cost changes, begin consultations within 10 days.

• ㆍ Do not interfere with subcontractor management through subcontract payment adjustment methods, etc.

• ㆍ Do not disadvantage subcontractors (such as by limiting order opportunities) for reporting prime contractors to relevant agencies.

• ㆍ Do not engage in acts that substantially avoid application of this law through indirect methods related to subcontract transactions.

Do you provide or trade funds such as advances and loans to specially related parties (affiliates, etc.) at lower or higher compensation or in significant amounts compared to transaction conditions with other business entities?
(Acts such as lending funds to affiliates at low interest rates, non-collection or delayed collection of loans and loan interest, etc.)

Do you provide or trade assets such as real estate, securities, and intangible property rights to specially related parties at lower or higher compensation or in significant amounts compared to transaction conditions with other business entities?
(Acts such as purchasing corporate promissory notes issued by affiliates at discount rates lower than those for non-affiliate purchases, etc.)

Do you provide or trade personnel to specially related parties at lower or higher compensation or in significant amounts compared to transaction conditions with other business entities? (Cases where personnel are provided for business support but personnel costs are borne by the supporting company, etc.)

Even if trading goods or services with other business entities would be considerably advantageous, do you add affiliates with no or minimal transaction roles to the transaction stages or conduct transactions through them?

Do you refuse to initiate transactions with specific business entities, discontinue continuous trading relationships, or limit the quantity or content of traded products?

Do you trade at significantly favorable or unfavorable prices according to trading regions/counterparts without objective standards for establishing transaction price differentials?

Do you provide significantly favorable or unfavorable treatment regarding transaction conditions, such as quantity and quality, or transaction content for specific business entities without objective standards?

Do you provide favorable treatment to affiliates regarding transaction conditions such as quantity, price, and quality, or transaction content?

Do you supply products at a total sales cost that is below the cost to exclude competing business entities?

Do you purchase goods/services at higher compensation compared to normal transaction prices to exclude competing business entities?

Do you provide or offer unfair or excessive benefits (such as attaching conditions that restrict dealer activities or offering prizes or rebates without objective payment standards) to induce customers of competing business entities to trade with you, contrary to normal transaction practices?

Do you force suppliers to trade by presenting disadvantageous conditions that are unfair considering transaction practices?
(Acts such as trading only with companies that purchase products produced and sold by affiliates, forcing company suppliers to buy products produced or supplied by affiliates, etc.)

Do you force customers to purchase goods/services they have no intention of buying?
(Cases where you directly or indirectly inform trading partners that future continuous transactions will be affected if they don't purchase, thereby forcing purchases, etc.)

Do you force trading counterparts to provide economic benefits such as money, goods, and services?

Do you present sales targets to dealers and force them to achieve these targets?

Do you set or change transaction conditions in a way that disadvantages trading counterparts, or impose disadvantages during their implementation?

Do you require trading counterparts to obtain your instructions or approval when appointing or dismissing executives and employees, or restrict their production items, facility scale, production volume, or transaction content?

Do you trade under conditions that unfairly restrict trading counterparts from dealing with competing business entities, or that unfairly restrict trading regions or trading counterparts, and impose penalties such as suspension of product supply if violated?

Do you interfere with other business entities' business activities to an extent that hinders them, such as through unfair use of technology?