This is because application of the regulations assumes the existence of an employment relationship and makes it possible to protect against certain risks, which: (a) the workers themselves face, (b) their dependants face before they begin working life, and (c) will enable workers to gain protection once they cease active life. In this case, the key labour regulations selected are those that establish pre-natal and post-natal rest periods, leave for feeding and caring for children due to illness, and the entitlement creche services or other alternatives with a similar purpose. For example, the coverage of health-related risks is not confined to the scope of work-related accidents or occupational diseases, as happens with other common or chronic and disabling diseases that may also prevent work activity either temporarily or permanently. In this case, the units of analysis are the health systems and the coverage they provide.