The authority, exactly
DETE's own guidance states that, following a successful application, a visa-required national still has to apply to the Irish embassy or consulate responsible for their country for an entry visa before travelling. Once in the State, every employment permit holder must register their immigration permission with the Garda National Immigration Bureau. DETE also states plainly that an employment permit is not a residence permission, and that holders of this particular permit do not accrue rights towards long-term residency, because it exists on the basis that the transfer itself is temporary.