Artikel 20

1. The persons protected shall comprise:
a) all employees, including apprentices; or
b) prescribed classes of the economically active population, constituting in all at least 70% of the total economically active population.
2. a) Notwithstanding the provisions of sub-paragraph a of the foregoing paragraph, any Party may exclude from the application of this part classes of employees constituting no more than 15% of all employees;
b) notwithstanding the provisions of the foregoing paragraph, any Party may exclude from the application of this part civil servants enjoying prescribed guarantees of employment security.
3. In addition, the persons protected shall comprise, under prescribed conditions, at least two of the following eight classes of persons who have never belonged, or who have ceased, for a prescribed period, to belong, to the group of protected persons referred to in paragraph 1 of this article:
a) young persons having completed vocational training;
b) young persons having completed their studies;
c) young persons discharged from compulsory military service;
d) parents at the end of a period devoted to bringing up a child after the end of maternity leave;
e) persons whose spouse is deceased;
f) divorced persons;
g) discharged prisoners;
h) disabled persons who have completed their occupational rehabilitation.