For Disney owned and operated locations current cast there will be reassigned to other locations, this should especially help restaurants that still aren’t open 7 days a week. This will be done in phases over the next year. No Disney cast will lose their job. Not sure what the plan for third party locations is going forward though as they work for different companies and will have different policies. Just for reference:
100% Disney
Norway, Germany, American Adventure, Morocco, United Kingdom, Canada
Disney Merch and attractions only
Mexico, Italy, France
Attraction only
China
Everything else is third party, so not sure what plan is in place for them