Pregnant employee? You're not her doctor and you don't know what's best for her.

The Pregnant Workers Fairness Act took effect June 27. In the run-up to that date, the EEOC began filing pregnancy-discrimination lawsuits at a rapid clip. For example, it just sued a bar over allegations that managers adopted a paternalistic approach to pregnancy, resulting in the firing of a pregnant bartender.

Recent case: Kellie was a bartender at The Corner Bar in Austin, Texas. She usually worked the most lucrative shifts, and typically worked until closing time.

Kellie became pregnant and told her supervisor. Soon after, her hours were cut and she was removed from the closing shift. Kellie then came down with a viral infection and was hospitalized. While she was still in the hospital, her manager called and said they were "parting ways" with her. He explained that the bar had recently experienced a fight between two patrons, allegedly making the workplace unsafe for a...