At an IND desk, your employee can, for example, collect a residence permit or have biometrics taken. There are 7 IND desks in the Netherlands where they can do so, as well as several expat centres.
For the Leiden region, we suggest going to the desks in The Hague or Amsterdam. Visiting the IND requires an appointment.
Address for IND service in The Hague: Rijnstraat 8, 2515 XP Den Haag.
Address for IND desk in Amsterdam: Pieter Calandlaan 1, 1065 KH Amsterdam.