LANSING —A Democratic senator wants to ban employers from discriminating against staff or job applicants based on their use of contraceptives.

Sen. Jim Ananich, D-Flint, has renewed his call for what he deems the "not your boss's business" bill in light of a federal court case regarding health coverage for contraceptives.

The U.S. Supreme Court on Tuesday will hear oral arguments in a religion-based challenge from family-owned companies that object to covering certain contraceptives in their health plans as part of the Affordable Care Act's preventive care requirement.

Ananich sponsored Senate Bill 732 to ban employers from asking employees or applicants about their use of contraceptives and prohibits discrimination against an employee or applicant for failure to provide information on their use or nonuse of birth control pills and other contraceptives.

"It's really a privacy issue, it's just no one's business," Ananich said.

The bill hasn't yet received a committee hearing and is unlikely to pass the Republican-controlled Legislature. Sen. Majority Leader Randy Richardville, who chairs the Government Operations Committee, has not made a decision one way or another to hold a hearing on SB 732, but spokesperson Amber McCann said she doesn't expect it to come up in committee anytime soon.

Ananich said he's getting ahead of potential issues by preemptively banning discrimination against employees based on whether they use contraceptives and why they use them.

He pointed to an Arizona law that allows religiously affiliated employers to refuse to provide coverage for contraceptives. It also allows such employers to require proof that a contraceptive is prescribed for a medical purpose other than preventing or ending a pregnancy in order for the employee to receive a cost reimbursement.

Planned Parenthood Advocates of Michigan backs Ananich's bill.

"Women should be allowed to make their own decisions about what is best for them and their family," Meghan Hodge Groen, the group's government relations director, said in a statement.

Some of the nearly 50 businesses that have sued over covering contraceptives object to paying for all forms of birth control. But the companies involved in the Supreme Court case are willing to cover most methods of contraception, as long as they can exclude drugs or devices that the government says may work after an egg has been fertilized.

The largest company among them, Hobby Lobby Stores Inc., and the Green family that owns it, say their "religious beliefs prohibit them from providing health coverage for contraceptive drugs and devices that end human life after conception."

The Greens say they have no desire to make health care decisions for their employees, but neither do they want to contribute to services to which they object.

The Obama administration says a victory for the companies would prevent women who work for them from making decisions about birth control based on what's best for their health, not whether they can afford it.

The Associated Press contributed to this story.

Email Melissa Anders at manders@mlive.com. Follow her on Google+ and Twitter: @MelissaDAnders. Download the MLive app for iPhone and Android.