The Wtta (Wet toelating terbeschikkingstelling van arbeidskrachten) is the Dutch Labour Market Access Act. This Act comes into force on 1 January 2027 and requires all companies that supply staff to other organisations to hold official approval from the Dutch Labour Market Authority (NAU). Without approval, a company may no longer supply staff. Companies that hire staff may only work with approved providers from 2028 onwards. The Act is designed to combat abuses in the staffing and secondment market.