Document for asylum seekers, aliens who cannot travel for health reasons, and aliens who have been granted postponement of expulsion. The last two categories only receive a W-document if they are not in the possession of a passport. In the case they do have a passport, a sticker is put in the passport.
With the W-document, the person concerned can prove his/her identity. The reason why the holder is allowed to stay in the Netherlands is stated on the card. Specific employment is permitted, a work permit is required. Other employment is not permitted.