1. This Directive applies to workers with a contract of employment or employment relationship with a temporary-work agency who are assigned to user undertakings to work temporarily under their supervision and direction.

2. This Directive applies to public and private undertakings which are temporary-work agencies or user undertakings engaged in economic activities whether or not they are operating for gain.

3. Member States may, after consulting the social partners, provide that this Directive does not apply to employment contracts or relationships concluded under a specific public or publicly supported vocational training, integration or retraining programme.