Excellent starting place for links to laws and cases for over 120 countries. Click All Countries, then select specific country. For laws, see under legislation or parliament. Under government, try locating the ministry of health as sometimes laws are posted there.
International Labor Organization
NATLEX has laws on night work, maternity protection, workplace safety, and more. Translations sometimes provided. Best to access via the country and see listed laws.
This free website is great for comparing constitutional provisions over multiple jurisdictions. Use the Topics on the left (rights and duties -> social rights -> right to health care. Can "pin" and compare several jursidictions.