The freedom to believe and practice one's own religion was one of the founding principles of our nation. The First Amendment protects everyone's right to freedom from government coercion and repression of religious beliefs. But it wasn't until 1964, when Title VII of the Civil Rights Act passed, that employees in the private sector were protected from religious discrimination in the workplace.
Title VII prohibits employers from making decisions based on an employee's or applicant's religion. Employers are also required to provide reasonable accommodations to allow employees to practice their religion, unless doing so would create an undue hardship. The articles below explain what religious discrimination is; which beliefs count as "religious," and are therefore protected under Title VII; and what types of accommodations an employee might reasonably request at work.