There are at least five principle ways that you can be discriminated against at work based on your pregnancy.

This week’s the 40th anniversary of the Pregnancy Discrimination Act – the 1978 federal law designed and enacted to protect women who become pregnant while working, from being fired while pregnant and working.

If you’re going to have your Rosa Parks moment, make it count. Make sure you document, document, document the complaint, and all follow up to the boss, to the HR department. Whatever happens, put it in writing. Hold their feet to the fire. Stand up for yourself. The Rosa Parks moment, Circa 2018 in the workplace.

Every case has a statute of limitations – the date by which it must be filed, or the chances are lost forever. In discrimination cases, sexual harassment, pregnancy discrimination, retaliation, any kind of employment law case, a charge of discrimination must be filed with the United States Equal Employment Opportunity Commission before you’re allowed to file in court, and that charge of discrimination must be filed, within either 180 days of the last discriminatory act or 300 days of the last discriminatory act, depending on the state where you work. So for instance, in New York, that federal filing date with EEOC is 300 days from, if you were fired, that is likely the last discriminatory act.

Here’s one thing all pregnant working women in the United States now have in every State in the Union, and that’s the right not to be treated differently, not to experience hostility, backlash, a diminution, a degradation to the terms or the conditions or the privileges of your employment because of your pregnancy, because of your childbirth, or because of a related medical condition.

If you’re struggling with work-related, pregnancy related challenges while you’re working, just understand that it is illegal even if your employer doesn’t know it. And don’t give up, don’t despair.

Your company must have a conversation with you about your needs when you’re pregnant, and it has to “reasonably accommodate” you – that’s the phrase for having a little flexibility when you are pregnant.

The New York Times reviewed thousands of pages of court and public records and interviewed dozens of women, their lawyers and government officials. A clear pattern emerged. Many of the country’s largest and most prestigious companies still systematically sideline pregnant women. They pass them over for promotions and raises. They fire them when they complain.

if your company has at least 50 employees, you are covered for up to a year after your baby is born, you are permitted, and they are required to create, make this space for you to express milk and continue lactating during working hours. Unpaid time, but they can’t discriminate and they must permit you to do so. If your employer does not have 50 employees, approximately half of the states in the United States have their own lactation laws such as in New York, and Connecticut, where I practice law – both of those laws go farther than the federal law in protecting women who are lactating.

Pregnancy discrimination in the workplace is illegal, but it happens all the time. So you need to be proactive. It’s not as if your company’s gonna grow a heart, all of a sudden.