Hello, congratulations on your approval!
Did you apply for your SOWP after your spouse’s PGWP got approved? Or while it was in progress? I am graduating soon and have to apply for my PGWP and spouse’s SOWP, your experience will be helpful.
Thank you.
You don't need to wait for your spouse's pgwp approval.
Attach "Submission Confirmation" letter of your spouse's pgwp application with your sowp application.
Write an explanation letter mentioning all the details of your spouse (UCI, Application number, Date of submission etc), and that you'll provide his/her Post Grad Work Permit copy as soon as you receive it.
Usually they can check the status of your spouse's pgwp through their UCI and application number, but safer side just upload the hard copy through Webform once pgwp application is approved to support your application.
I followed the same process.