An Ireland work permit and a work visa, serve different purposes. An Ireland work permit is granted by the Department of Enterprise, Trade and Employment in Ireland, authorizing you to work in a specific job in the country. An Ireland work visa allows you to enter the country legally. To work in Ireland, you will need both a work permit and a work visa, requiring you first to obtain an approved work permit, followed by a work visa that will allow you to fly to Ireland and start working.