Protectorate of Emigrants - Pakistan, do I need a stamp?

[chaudri]

BG: My spouse already has a protector stamp because she was employed in Bahrain and was on a work permit. Now she is in Canada on a valid work permit, we are planning to visit Pakistan and I am wondering if she needs a new protector stamp? Or can she leave Pakistan on Canadian work permit and old protector stamp?

Thanks in advance.