As you may know, the amended Trade Union and Labor Relations Adjustment Act (the “TULRAA”), frequently referred to as the “Yellow Envelope Act,” has expanded the definition of an “employer”. The definition now encompasses those who, despite not being a direct party to an employment contract, exercise “substantial and specific control” over a worker’s terms and conditions of employment.
Under this new definition, principal contractors (prime contractors) who exercise “substantial and specific control” may be deemed employers of their subcontractors’ employees. Consequently, if a subcontractor’s labor union makes a demand for collective bargaining, the principal contractor may be obligated to respond. This creates a scenario where a principal contractor must manage bargaining demands not only from its own employee union but also from the unions of multiple subcontractors.
To facilitate a substantive collective bargaining process between principal contractors and subcontractor unions while mitigating potential confusion at industrial sites caused by multiple bargaining demands, the Ministry of Employment and Labor (the “MOEL”) has announced a legislative notice period for a partial amendment to the Enforcement Decree of the TULRAA (the “Amendment”), which runs from November 25, 2025, to January 5, 2026.
The key highlights of the proposed Amendment are provided below.
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1. |
Bargaining Unit Separation within Single Representative Framework |
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(1) |
Individual unit: If the duties, interests, or union characteristics differ significantly among subcontractors, units may be separated by individual subcontractors. |
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(2) |
Group unit: If there are subcontractors with similar duties or characteristics, they may be grouped as separate units. |
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(3) |
Unified unit: If the duties and characteristics of all subcontractors are similar, all subcontractors may be separated into a single, unified bargaining unit. |
Once the units are separated, the procedure for establishing a single bargaining channel will proceed within each separated unit to determine a representative bargaining union. The MOEL plans to provide guidance to ensure minority unions are not excluded during this process, encouraging the selection of representatives through autonomous decisions, delegation, or the formation of joint negotiation teams.
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2. |
Streamlined Procedures for Employer Status Determination |
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3. |
Practical Implications for Companies |
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(1) |
Proactively identify which specific working conditions of subcontractor employees are subject to the company’s substantial and specific control. |
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(2) |
Conduct a preliminary legal review to determine the potential scope of the company’s bargaining obligations. |
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(3) |
Develop a clear understanding of the single bargaining channel establishment and unit separation procedures to ensure readiness for potential negotiations with subcontractor unions. |
As the Amendment is currently in the legislative notice phase, specific details may be subject to adjustment based on public feedback. Given that the forthcoming guidelines on employer status and labor disputes will significantly impact practical operations of businesses, we recommend continuous monitoring of these legislative developments and regulatory trends.
Related Topics
#Yellow Envelope Act #MOEL #Collective Bargaining #Labor & Employment




