Certainly, with a little planning, the employees w/o 4WD could have networked with others and made arrangements to get rides to work. OTOH, maybe these few were not dependable employees and now the hospital has a good reason to get rid of them. It's not like these people couldn't walk into any other hospital and not be hired on the spot.
WHC hasn’t been in the top 5 anywhere for a very long time. The DC area has a good number of high quality hospitals ~ in Fairfax County!