Obama is five steps ahead of you.
He has the IRS out there investigating companies with common ownership ties. If they find you employing a strategy like this, fines and penalties will be forthcoming.
They will treat all enterprises as being one company.
That’s just it, broker the employees between two completely different companies with no ties other than perhaps type of work (this will only work with mostly unskilled workers), that way you could shift entire shifts almost between them and avoid the penalties.