Attaching a range for dates

I'm working on a project where I have a hire table and a termination table. The hire table has a hire date along with a hire week. There is another column for the hire week that has the week start date and week end date of the week they were hired which I really like (see picture below)

I'd like to apply a similar date range to my termination table off of the termination date. Does anybody know how this would work? Is there a formula I could use?