The United States Court of Appeals for the Ninth Circuit has held that an airline's employment policy mandating immediate unpaid maternity leave for all flight attendants upon discovery of pregnancy is sex discrimination but is justified by safety considerations.
Harriss v. Pan American World Airways, Inc., 649 F.2d 670 (9th Cir. 1980).
Margaret L. Cohen,
Civil Rights Act of 1964 - Title VII - Sex Discrimination - Pregnancy - Defenses,
Duq. L. Rev.
Available at: https://dsc.duq.edu/dlr/vol20/iss1/12