The Stichting Normering Arbeid (SNA) is an important hallmark for staffing companies established by the Labour Standards Foundation in the Netherlands, safeguarding a buyer if a staffing supplier does not pay mandatory taxes and duties. The SNA hallmark makes hiring temporary labor and subcontracting a lot easier and safer for the client, simply because they enjoy better protection against fraud. The SNA hallmark is partly based on the NEN-4400 quality mark. (See: NEN-4400)