I would assume legal compliance in more than one way. Some countries don't allow you to fire employees as you wish, you have to comply with worktime regulations

I would assume legal compliance in more than one way. Some countries don't allow you to fire employees as you wish, you have to comply with worktime regulations, etc. Your ability to ask for noncompetes, or have the employee sign over their rights to all IP concieved during the employment may also be challenging. If you mess up, you might get sued in an unfamiliar jurisdiction. All in all, a whole lot of legal work that is only worth it if you can't fill the position otherwise.