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1. The persons protected shall comprise:
a) all employees, including apprentices, together with their dependent spouses and their children; or
b) all economically active persons together with their dependent spouses and their children; or
c) all residents.
2. Notwithstanding the provisions of the foregoing paragraph, any Party may exclude from the application of this part:
a) classes of employees constituting in all no more than 5% of all employees; or
b) classes of the economically active population constituting in all no more than 10% of the total economically active population; or
c) classes of residents constituting in all no more than 10% of all residents.
3. Where either sub-paragraph a or b of paragraph 1 of this article applies, persons receiving any of the following benefits or applying for one of the benefits provided for under sub-pararaphs a or b of this paragraph:
a) invalidity, old-age or survivors' benefit;
b) benefit for permanent disablement to a prescribed degree or survivors' benefit, in the case of a work accident or occupational disease;
c) unemployment benefit,
together with their dependent spouses and their children, shall continue, under prescribed conditions, to be protected.
4. Any Party may derogate form the provisions of paragaphs 1 to 3 of this article if its legislation requires medical care to be guaranteed:
a) to prescribed classes of employees constituting in all at least 80% of all employees; or
b) to prescribed classes of the economically active population constituting in all at least 75% of the total economically active population; or
c) to prescribed classes of residents constituting in all at least 70% of all residents, and in the case of illness requiring prolonged treatment, to all residents.