노동조합법 제2ㆍ3조 개정의 쟁점과 향후 과제 ― 미국과의 비교를 중심으로 ―

The Amendment to the Trade Union and Labor Relations Adjustment Act of 2025, fundamentally aims to modernize Korean labor law by incorporating diverse employment forms and multi-layered labor relations into its framework. This legislative reform seeks to mitigate the dual structure of the labor market, extend protections to previously unprotected workers, and promote peaceful dispute resolution. A key provision is the expansion of the employer concept to include entities exercising “substantial and concrete control” over working conditions, moving beyond the traditional focus on direct contractual relationships. While enhancing worker protection, this change creates significant challenges for the existing bargaining agent determination process, necessitating further legislative refinement, potentially drawing from the U.S. Joint Employer doctrine. Furthermore, the definition of a labor dispute has been broadened to encompass matters of “worker status” and “management decisions affecting working conditions.” The ambiguity of the latter is expected to generate interpretive challenges. Comparative analysis with U.S. jurisprudence, where management decisions with a “substantial impact” on employment are subject to bargaining, suggests that while the Amendment has precedent, it requires a careful delineation of scope. The Amendment also limits liability for damages arising from industrial actions, aligning with recent judicial trends that curtail individual responsibility. However, civil liability for actions deemed “illegitimate” remains, which may continue to have chilling effects on workers’ participation in industrial actions. This framework diverges significantly from the U.S. system, where damage claims are severely restricted and liability is not contingent upon an assessment of the industrial action's legitimacy or legality. Finally, the reform relaxes the negative requirements for union status by codifying the existing legal interpretation that allowing non-worker membership does not automatically nullify a union's legal status, provided its autonomy and worker-centric purpose are not compromised. In conclusion, the Amendment represents a critical and proactive step toward adapting labor law to contemporary economic realities. However, it is not a complete solution but rather a starting point that introduces operational complexities requiring meticulous review and subsequent legislative action. The six-month preparation period underscores the urgency of developing detailed implementation measures to ensure the reform's intended effects are realized.