NEN 4400-1 is a Dutch quality standard that sets requirements for temporary employment agencies, secondment companies, contractors, and subcontractors with a registered office in the Netherlands. The standard focuses on compliance with the payment of payroll taxes and social security contributions, as well as the legal employment of personnel in the Netherlands.

HR ProjectPartners has been certified in accordance with NEN 4400-1 since August 2009 and is listed in the Labour Standards Register (Stichting Normering Arbeid – SNA). This certification demonstrates our ongoing commitment to compliance, transparency, and responsible employment practices.