Tom Monaghan, a devout Roman Catholic, says contraception isn't health care but a "gravely immoral" practice.
He filed a lawsuit Friday in federal court. It also lists as a plaintiff Domino's Farms, a Michigan office park complex that Monaghan owns.
Monaghan offers health insurance that excludes contraception and abortion for employees. The new federal law requires employers to offer insurance including contraception coverage or risk fines.
Monaghan says the law violates his rights, and is asking a judge to strike down the mandate. There are similar lawsuits pending nationwide.
A message left Saturday for Monaghan's attorney, Richard Thompson, was not immediately returned.
The government says the contraception mandate benefits women.
(Copyright 2012 by The Associated Press. All Rights Reserved.)