1.This Directive shall apply to:
(a)statutory schemes which provide protection against the following risks:
(a)sickness,
invalidity,
old age,
accidents at work and occupational diseases,
unemployment;
(b)social assistance, in so far as it is intended to supplement or replace the schemes referred to in (a).
2.This Directive shall not apply to the provisions concerning survivors' benefits nor to those concerning family benefits, except in the case of family benefits granted by way of increases of benefits due in respect of the risks referred to in paragraph 1 (a).
3.With a view to ensuring implementation of the principle of equal treatment in occupational schemes, the Council, acting on a proposal from the Commission, will adopt provisions defining its substance, its scope and the arrangements for its application.