You didn't specify just in the U.S. or if world wide.
I stand by my answer, however. I made the meme reply and THEN checked the numbers. They still bear out for the U.S. A quick search shows that Walmart is the #1 private sector employer at 2.2 million. There are 2.8 million federal employees.
As far as profit...what could be more profitable than taxing people at the rate that YOU decide, having the ability to print money, and taking on debt with no plan or inclination to repay it?