Lots of people, especially in engineering and similar professions, are salaried. We are paid weekly to accomplish whatever amount of work our boss expects of us

Lots of people, especially in engineering and similar professions, are salaried. We are paid weekly to accomplish whatever amount of work our boss expects of us that week. That doesn't necessarily mean any specific number of hours, or that the work be done continuously without breaks. The trade off of course is that sometimes the work takes more than the nominal 40 hours, or has to be done at odd hours, and you don't get paid more for that.