Supriyanto, S., & Irayadi, M. (2026). A Normative Legal Analysis of the Effectiveness of Holistic Protection of Outsourcing Workers in Indonesia as a Model of Proportional Responsibility of PPJ-PJTK in the Joint and Several Liability System. IBLAM LAW REVIEW, 6(1), 37–55. https://doi.org/10.52249/ilr.v6i1.651