In the context of this project, the concept of “professionalisation” consists of several possible developments. Firstly, it could consist of targeted initial training and continuing training of employees. Professionalisation also encourages the structuring of the sector, which ensures that greater value is attached to work and that workers are recognised, but it also makes the benefit of purchasing these services on the formal market more obvious for users. Finally, it also consists of facilitating matching between PHS demand and supply.