This research article aims to explore the relationship between the implementation of a QMS according to ISO 9001 standards and skills development. We know for a fact that producing quality is a matter of competence. The ISO 9001: 2015 standard recommends mastery of knowledge and skills as one of its requirements. But what really (in practice) about certified companies? The results of our survey in four certified companies show that all of the companies surveyed confirm the existence of a positive link between the QMS and skills management.