Hello! This happened to me before... I sent an OWP application together with my PR application... _spousal sponsorship...(hubby sponsored me). I also have a close work permit. BTW, I am from Alberta.
What happened was, our application took longer than the usual processing... and my close work permit expired. So technically, I have an implied status... Later did I know, my healthcare coverage will expire when my close work permit expires... My passport is due to expire that time too, and an Implied status won't do anything for an application for a new passport. I have to have a VALID work permit to be able to apply (PHilippine passport). So I applied for a close work permit again just so I have healthcare coverage and can apply for a passport.
The time I was on IMPLIED STATUS... yes I worked continuously! so he can continue to work that's no problem. If your application is straight forward then you can just wait for the 1st stage approval then and have an OWP... If you are worried about healthcare coverage and stuff ..If I were you I'll apply under the employer again...