Why does it take so long to issue residence and work permits, as well as visas for candidates from third countries?

During the issuance of residence and work permits, all parties involved in the recruitment process (candidate, client/employer, and agency) must undergo security checks. If the agency is recognized as reliable and reputable, security checks are expedited. The same applies to the client/employer and the candidate. The candidate can expedite the process by timely preparation and apostilling of immigration documents.