This research is a type of normative legal research or library legal research which is research into legal systematics. Primary legal materials include statutory regulations, namely: the Civil Code, Law no. 13 of 2003 concerning Employment and laws and regulations related to the problem. Secondary legal materials, namely discussing primary legal materials including scientific works, research results and articles related to research topics. Tertiary legal materials are legal materials that support primary and secondary legal materials consisting of dictionaries, encyclopedias, and others. The legal material is prepared systematically and a conclusion is drawn regarding the problem. The discussion concludes: A work agreement is an agreement between a worker/laborer and an entrepreneur/employer which contains the work conditions, rights and obligations of the parties as regulated in chapter IX concerning Employment Relations (article 51 and article 52 of Law No. 13 of 2003 About Employment). Work protection rights for workers, namely occupational safety and health (article 86), wages (article 88) and welfare rights, namely social security for workers in the form of BPJS health, BPJS employment (article 99 of the Employment Law) and welfare of workers/their families (articles 100 and 101 UUK).