Resorts in Mexico are often in rather poor areas. The workers may indeed WANT 80 hour weeks (at their whatever few US dollars an hour). If you only work them 40

Resorts in Mexico are often in rather poor areas. The workers may indeed WANT 80 hour weeks (at their whatever few US dollars an hour). If you only work them 40, they would get half pay - so go work at the neighbor resort for 40 more hours. Yes, ideally each worker would work half the hours for double the pay, but that is not free to the resort owner.