Therefore, many, if not most, forms of gender-based harassment would now be prohibited under the ground of gender expression as well. The law specifies that sexual harassment is a form of gender-based discrimination in the workplace. The Equal Employment Opportunity Commission claims that it is unlawful to harass an applicant or employee of any sex in the workplace. This act only applies to employers with 15 or more employees. This law makes it illegal for an employer to discriminate against individuals in hiring, firing, and other terms and conditions of employment, like promotions, raises, and other job opportunities because of their sex. It is usually most effective -- although it is not required--that the official be within the employee's supervisory chain.