The work visa does not allow you to work without an approved work contract. This is the second stage in the procedure for obtaining a residence permit "for work" in Morocco.
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Visas are required for certain nationalities, e-visas are limited to single-entry stays of less than 3 months... which visa do you need and how much does it cost?
No visa prolongation during lockdown, but you have to leave as soon as the borders open. They haven't yet.
Overstaying is not a ground to refuse you entry in Morocco, one your situation is cleared.
