That they both signed a contract promising employment, seems pretty straightforward. Don't get me wrong, the employer can then fire the employee within the pro

That they both signed a contract promising employment, seems pretty straightforward. Don't get me wrong, the employer can then fire the employee within the probation period of two weeks scotch-free (well, after a bunch of paperwork), and the employee can quit within that period as well, and while it might seem the same it's not because that triggers all sorts of gvmt protections for the employee (mainly, unemployment benefits, but YMMV).