Yoon & Yang offers effective professional dispute response services through attorneys who have accumulated high-level expertise and experience in disputes including various litigation and arbitration cases related to construction. In particular, it has satisfied construction companies and other clients by developing creative and original legal principles and interpretation theories in areas with no established legal principles and precedents in addition to typical, ordinary disputes, such as disputes in private sector- or government-ordered construction works and disputes related to turnkey construction contracts and construction defects and processes.

Key Services

Construction cost disputes

  • Claims for additional construction costs
  • Overheads and liquidated damages
  • Defects

Joint contracting and subcontracting disputes

  • Claims for cost contributions and disputes among members of a consortium
  • Composition, operation, and liquidation of a consortium
  • Disputes related to project owners and subcontractors

Other Disputes

  • Disputes related to construction guarantees
  • Disputes related to the infringement of the right to light and the right to a view and damage caused by noise and vibration
  • Disputes related to unit-sale agreements, including the cancellation of unit-sale agreements
  • Various preliminary injunction cases, including preliminary injunctions for suspending construction


Representative Cases

  • Represented KEPCO E&C in an arbitration regarding the extension construction of a combined cycle power plant in Ivory Coast
  • Represented KEPCO E&C in various arbitration and domestic litigation cases regarding the extension construction of a thermal power plant in Ghana
  • Represented KORAIL in the litigation for the confirmation of the non-existence of debt filed by the PFV and investors of the Yongsan Station area development project against KORAIL
  • Represented the developer of Cheongju GWell City in the litigation case seeking the cancellation of the unit-sale agreements of the unit purchasers on the ground of false/exaggerated advertising of Cheongju GWell City
  • Represented POSCO E&C, the contractor for the Songdo International Business District development project, in various litigation and disputes with the developer and the competent authority
  • Represented POSCO E&C in the litigation case regarding the construction of a coal-fired power plant in the Philippines
  • Handled the litigation regarding the disputes among the consortium members related to the installation construction of the Samcheok Green Power Plant and the overhead litigation case against the project owner
  • Represented the contractor related to construction area 3 of the Ulsan-Pohang double track railway construction, construction area 1 of the Jecheon-Ssangyong double track railway construction,and others in overhead litigation cases
  • Handled the litigation seeking the payment of the cost contributions among the consortium members of the expansion construction of the Naengjeong-Busan construction area 6.
  • Represented Samsung Engineering in the construction cost claim litigation regarding the construction of the Seoul World Cup Stadium
  • Represented Samchully ES in an arbitration case regarding liquidated damages
  • Represented Shinsegae E&C in various litigation cases regarding the construction of the Myeongdong Hi Harriet, Dongdaemun Wow Shopping Mall, and a mixed-use building in Sanggye-dong
  • Represented the contractor who participated in the consortium of the Winter Olympics facility construction project in the litigation regarding ESC claims