To receive accommodations under the PWFA, the affected employee will typically need to start a conversation with a superior or HR representative. You should always put your request in writing, clearly stating that you are making a request for accommodations under the Pregnancy Workers Fairness Act. State both the accommodation you are requesting and how it would allow you to perform your job to the best of your abilities.
Your employer is required to have a conversation with you about your request. They are not allowed to require you to accept another request without your agreement. However, if your request does create an undue burden (i.e., significant financial strain), your employer is allowed to suggest an alternative that could address the same limitation.
If your employer refuses to acknowledge your request, tries to intimidate you into dropping your request, or otherwise retaliates, they may have violated the PWFA. You should always consult an attorney if you believe your employer is infringing upon the legal rights of employees.