Sexual harassment is by far the most prevalent form of harassment individuals experience in the workplace. Sexual harassment violates the law when it is so severe or constant that it alters the conditions of the victim's employment and creates an abusive working environment. Sexual harassment is illegal under both federal and California law. Federal law offers protections to employees of companies of 15 or more employees. In California, sexual harassment is prohibited for employers of any size. Sexual harassment takes many forms. Being the butt of sexually-charged jokes or pranks, being grabbed or whistled at, sexual advances, requests for sexual favors or other verbal, visual, or physical conduct of a sexual nature can qualify as sexual harassment. Conduct that makes the workplace sexually charged does not need to be directly aimed at the person being harassed in order for it to be actionable. For example, being exposed to pornographic pictures can form the basis of a sexual harassment claim.