Wow, a thousand a day? Is that full wages, or does it include benefits? Even if it did include benefits, $1,000/day all-in is not exactly chump change. Universal income would not pay them $1,000/day.
I'm implying that workers are often employed temporarily though a subcontracting agency, rather than being in a permanent role. The daily costs is fully inclusive.
Both companies should keep track of what resources are assigned where and paid for.