Employee rights protection constitutes a fundamental aspect of a fair industrial relations system. Labor unions play a strategic role as collective representatives in balancing the position of workers and employers. However, in practice, the effectiveness of such protection is often influenced by legal awareness and the utilization of collective mechanisms. This study aims to analyze the role of labor unions in protecting employee rights, examine the effectiveness of Collective Labor Agreements (CLA), and identify challenges and strengthening strategies at PT Steel Center Indonesia. This research applies a normative juridical method combined with an empirical approach based on organizational experience. The results indicate that labor unions function not only as advocacy institutions but also as preventive actors through education, supervision, and industrial communication. However, challenges remain, including low legal awareness and individualistic approaches to dispute resolution. Therefore, strengthening strategies through legal education, CLA optimization, and reinforcement of Pancasila-based industrial relations are necessary. This study contributes to the development of labor law by integrating legal norms, collective mechanisms, and socio-cultural values.
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