Work permit: what it means
A work permit is the document (or visa) that lets a foreigner work legally in a country. Each country has its own: a patent in Russia, an E-9 visa (the EPS programme) in South Korea, a Seasonal Worker visa in the UK. Working without one can lead to fines and removal.
Useful pages
Related terms
Work patent (Russia) · EPS and the E-9 visa (South Korea) · Seasonal Worker visa (UK) · Formal employment (job contract)
This is general information, not legal advice. Check the exact rules with an official source.