People who do not work for their keep tend to not care about much in general, except keeping the money rolling in. I can also see the issue of those making just under that or just over that deciding it would make sense for them not to work. I am not an economist, but common sense tells me this is a terrible idea.
But you get the $20,000 regardless of your income. So somebody making $20,000/yr now wouldn’t still have $20,000/yr after this is implemented, he’d get $40,000/yr.
I would say go for it but only for those who can prove that they put out 40 hours per week. At the end of every year congress can argue over what the minimum should be. Savings from eliminating gov’t departments could be split up among the masses.