Widyani, I.D.A. and Lasmaria, D. 2021. Discontinuation Of Employment Relations Because The Efficiency In The Era Of Industrial Revolution 4.0. Jurnal Hukum dan Peradilan. 10, 3 (Nov. 2021), 407–420. DOI:https://doi.org/10.25216/jhp.10.3.2021.407-420.