Workplace sexual harassment laws have their basis in Title VII of the Civil Rights Act of 1964 which makes it a federal offense to discriminate against an employee or potential employee based on that person's race, color, sex, religion, or national origin. Workplace sexual harassment laws have developed over the past five odd decades to encompass many distinct types of behavior. There are two basic types of workplace sexual harassment: Quid Pro Quo sexual harassment and sexually hostile environments. In Quid Pro Quo sexual harassment, an individual is requested to exchange sexual favors for promotions, raises, more desirable shifts, or any other type of workplace perk. Quid Pro Quo sexual harassment is also when an employer threatens any type of negative action against an employee who rejects sexual advances. The idea that workplace sexual harassment law can also protect workers from dealing with what is deemed to be a sexually hostile environment means that workers do not have to tolerate sexually offensive remarks or graffiti in the workplace if it interferes with their ability to perform their job.