This is what unions are for:
Alain Sherter reports that two unionized mine workers in West Virginia were very unhappy with a company-sponsored bonus plan that the union had opposed as unsafe. So the workers returned their (paltry) bonus checks to the company inscribed with special messages for CEO Robert Murray (pictured above): “kiss my ass Bob,” and “eat shit, Bob.”
They were fired.
If you want to tell your boss to kiss your ass, unionize.