An employer may discharge an employee who observes a seventh-day sabbath, and that such employee is not entitled to equal employment opportunity protection under Title VII of the Civil Rights Act of 1964, which makes it an unlawful employment practice for an employer to discriminate against an employee on the basis of his religion. Decided June 16, 1977 (argued March 30, 1977). Opinion of the Court: Byron White → go there Dissenting: Marshall. Topic: Other areas. Trans World Airlines, Inc. v. Hardison, 432 U.S. 63 (1977), is a landmark decision on religious liberty and employment law. In 1977, the US Supreme Court held that an employer may discharge an employee who observes a seventh-day sabbath, and that such employee is not entitled to equal employment opportunity protection under Title VII of the Civil Rights Act of 1964, which makes it an unlawful employment practice for an employer to discriminate against an employee on the basis of his religion. Wiki link