Yellowstone is registered with the Labour Standards Foundation (SNA) as a NEN 4400-1 certified company. This is proof that you work with a bona fide party. SNA aims at realising self-regulation to prevent fraud and illegal practices in the temporary employment industry and all forms of (sub) contracting. Tio this end, SNA carries out inspections to check whether companies comply with the standard and awards the SNA certificate NEN 4400-1. The key objectives are:
More information can be found here: https://www.normeringarbeid.nl/
The certificate for Yellowstone international can be downloaded here: https://www.normeringarbeid.nl/snakeurmerk/gecertificeerde-ondernemingen?q=Yellowstone