The doctrinal discussion on personal data protection regulated by the EU regulation, i.e. the GDPR, appears to re-create a vibrant and never-ending debate on the private law nature of the employer who does not implement the principle of freedom of contract when concluding a contract of employment. Because it is simply an entity pursuing public interests. The social labour inspector is a prototype of data protection officer in the field of labour law. As a matter of fact, he is also executing this “dispersed” public authority in labour law.