Work permit
A work permit is the permission to take a job within a foreign country. It may also be a permit given to minors allowing them to work legally under child labor laws. Within an industry, a work permit may be required to execute certain functions within a factory outside normal operational tasks (such as maintenance tasks) - in some places they might be called Permit to Work (PTW).
European Union
Currently, every EU country has a different process for granting work permits to nationals of non-EU countries. To address this issue, the European Commission began work in 1999 on developing an EU-wide process for the entry of non-EU nationals into the work force. In October 2007, they adopted a proposal to introduce a work permit similar to the United States' "Green Card" program, called the "Blue Card". It is similar to the UK's Highly Skilled Migrant Programme, with the exception that it will require an employment contract in place prior to migration. After two years in the first country, the migrant will be allowed to move and work in another EU country, and can sum the number of years spent in the EU for purposes of residency. This new card will abolish work permits across the EU and centralize the issuing from Brussels.