I have same situation with you guys. I got my nomination letter and I mailed my PR application in March then I got laid off.
I emailed to PNP office (AB) about my employment status due to COVID-19.
This is the answer that I received :
Thank you for taking the time to keep us updated on your employment status. The AINP will continue to support your nomination as you met the working requirements at the time of assessment. Be sure to keep us informed once your employment resumes.
I understand that this is a difficult situation. I hope you are able to stay safe and healthy.
I think they are pretty understanding for this epidemic.