In the Working Conditions Act, the government provides general regulations for safe and healthy working. Employers and employees may decide for themselves how they comply with this and record this in an occupational health and safety catalogue. For the UMCs, the employers' organization (NFU) and the employee organizations have jointly drawn up such an occupational health and safety catalog containing agreements on about fifteen occupational health and safety risks, including Night Work. The Dutch Labour Inspectorate assesses these agreements. The Dutch Labour Inspectorate checks whether the umcs are complying with the agreements.