A work permit is a legal document that allows someone to work legally in a specific country, even if they are not a citizen of that country. Full definition
Previously such job offers gave an opportunity to receive work permit for a determined period of time (mostly one or two years) and then workers must back to their home countries. (lawiscool.com)
This is a rare transfer case with us that isn't being dragged out because of price, it's down to work permit issues. (justarsenal.com)
The proposed changes actually make it easier for players to gain work permits in some circumstances. (sbnation.com)