rewrite this It is illegal to harass an employee because of race, color, religion, sex (including gender identity, sexual orientation, and pregnancy), national origin, age (40 or older), disability or genetic information. It is also illegal to harass someone because they have complained about discrimination, filed a charge of discrimination, or participated in an employment discrimination investigation or lawsuit. Harassment can take the form of slurs, graffiti, offensive or derogatory comments, or other verbal or physical conduct. Sexual harassment (including unwelcome sexual advances, requests for sexual favors, and other conduct of a sexual nature) is also unlawful. Although the law does not prohibit simple teasing, offhand comments, or isolated incidents that are not very serious, harassment is illegal if it is so frequent or severe that it creates a hostile or offensive work environment or if it results in an adverse employment decision (such as the victim being fired or demoted). The harasser can be the victim's supervisor, a supervisor in another area, a co-worker, or someone who is not an employee of the employer, such as a client or customer. Harassment outside of the workplace may also be illegal if there is a link with the workplace. For example, if a supervisor harasses an employee while driving the employee to a meeting