Sexual harassment can occur between any combination of genders and includes unwelcome sexual advances, requests for favors, and other verbal or physical conduct of a sexual nature. There are two main types of sexual harassment: quid pro quo, where sexual favors are required for job benefits, and hostile work environment, where unwelcome sexual conduct creates an intimidating workplace. Employers can be held liable for sexual harassment committed by employees if they knew or should have known about it but did not take immediate corrective action. An employer should establish policies against sexual harassment, provide training, investigate claims confidentially, form committees to handle complaints, and monitor for unreported instances.