There is no National Health Service. Health care in Belgium is provided by medical security services which are mostly politically related (e.g. socialist, liberal etc.). Each member has to pay an annual membership fee. The services are comprehensive and cover basically all medical treatments without additional charges, provided the woman holds a valid residence permit. (A declaration of arrival or a tourist visa are not sufficient.) Also, the refund is financed by a social security fund which raises its funds from everyone who is working.
Employed and self-employed Sex Workers
The medical security services are not linked to labour, meaning that anybody, notwithstanding whether she works (employed or self-employed) or does not work may benefit from medical security services, provided that she holds a valid residence permit.
Women who work part-time as employed waitresses, dancers etc. and also work as prostitutes are partly protected, because of their contract as a waitress. Thus, they can enjoy health insurance and labour law protection for employees. Those rights are only valid when she is acting as a waitress; she is not protected as a prostitute.