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U.S. Supreme Court Peggy Young UPS
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Any woman in the vicinity of her child-bearing years will want to pay attention to a case that's being heard by the Supreme Court today.

The high court's findings on Young v. United Parcel Service should address the gray areas of what workplace protections are guaranteed for pregnant women.

The least you need to know:

What's the case about, anyway?

The plaintiff in the case is Peggy Young of Lorton, Va., who had worked as a delivery truck driver for UPS.

As part of her job description, she needed to be able to lift packages weighing up to 70 pounds. But when she got pregnant, her midwife wrote her a note that said she should not lift more than 20 pounds.

Young asked for a temporary "light-duty" assignment, but the company's occupational health manager determined that she was ineligible.

Young says the division manager then told her she was "too much of a liability," and she was not allowed to return to work until after she had given birth. So Young had to take an extended unpaid leave of absence, which caused her to lose her health coverage.

Wasn't that discrimination?

That's the question the court has to answer.

In 1978, Congress passed the Pregnancy Discrimination Act which clarifies that discrimination against pregnant women is a form of sex discrimination. That means your employer can't fire you or deny you job benefits because you're pregnant, you might become pregnant, you've given birth, or you have any related medical problems. Your employer has to treat you the same as people who are not pregnant but similar in their ability to work.

To prove sex discrimination, however, Young needed to show four things.

First, that she was a woman. Second, that she was qualified for the job, or the job benefit. Third, her employer denied her the job or benefit she wanted. And fourth, a similarly situated man received the job or benefit that she wanted.

The fourth presents a particular challenge: Since men can't get pregnant, which men are in a similar situation?

Young says UPS did give some other workers—employees who were injured on the job or had their drivers' licenses were temporarily revoked—the light duty she wanted. Therefore, Young says UPS owed her the same accommodations.

However, lower courts disagreed with Young.

The Fourth Circuit Court of Appeals reasoned that UPS's policy was "pregnancy-blind." UPS wouldn't have offered light duty assignments to, say, a man who threw his back out by lifting his kid or a woman who injured herself during a volunteer firefighter shift. Since UPS didn't give all its temporarily-disabled workers light duty, the court found that UPS didn't have to give light duty to Young.

Many women's groups, health providers, labor advocates and even pro-life activists strongly disagreed with that ruling.

"If at some point during her pregnancy, a pregnant worker needs a minor adjustment to her job duties in order to continue doing her job safely, the employer has an obligation to provide that," says Liz Watson, director of Workplace Justice for Women at the National Women's Law Center.

What happens next?

Young appealed. The Supreme Court will hear oral arguments in the case Wednesday and issue a ruling sometime before the end of this term, in late June.

But in a "friend of the court" brief, the Justice Department argues that it might be a moot point.

In 2008, Congress passed a law amending the Americans with Disabilities Act that should make it even easier for pregnant women to qualify for accommodations like the one Young sought. Now, injuries that temporarily limit your ability to lift, stand, or bend should also qualify you for accommodations under the ADA.

And UPS has already reversed its policy. “While UPS’s denial of [Young’s] accommodation request was lawful at the time it was made (and thus cannot give rise to a claim for damages), pregnant UPS employees will prospectively be eligible for light-duty assignments," the company's brief says.

In the meantime, what are my rights if I'm pregnant or plan to become pregnant?

You are afforded the same protections as Young through the Pregnancy Discrimination Act. So you can't be fired or denied benefits. Also, depending upon the size of the company, you may be entitled by law to up to 12 weeks of unpaid leave under the Family and Medical Leave Act.

Additionally, under Obamacare, employers are required to allow mothers reasonable break time and a private space to express breast milk, Watson says.

I think an employer violated my rights. What can I do?

You can contact the Equal Employment Opportunity Commission to file a complaint, Watson says.

You'll have more company than you might expect: From 1997 to 2011, the Equal Employment Opportunity Commission received over 74,000 complaints of pregnancy discrimination.

You can also contact your state's fair employment practice agency. Some states and municipalities have even stronger protections for pregnant women in the workplace. In the past 18 months, Illinois, Delaware, Maryland, Minnesota, New Jersey, West Virginia, Philadelphia, New York City, Providence and Pittsburg have all passed new laws, Watson says.

Or call a lawyer. "We unfortunately speak to women a lot who have suffered pregnancy discrimination," Watson says. "What happened to Peggy Young, being forced off the job because she brought in a doctor’s note, is happening to women all across the country."