Quid pro quo sexual harassment is illegal, but hostile environment harassment is not.

Quid pro quo sexual harassment involves a situation where a person in a position of authority offers benefits in exchange for sexual favors, clearly establishing a direct and coercive relationship. This type of harassment is unequivocally illegal because it undermines individuals' rights and creates a culture of fear and power imbalance.

On the other hand, hostile environment harassment occurs when an individual is subjected to unwelcome sexual conduct that creates an intimidating, hostile, or offensive work environment. This form of harassment is also illegal as it violates the principles of workplace safety and equality. Both types of harassment are recognized as serious offenses under employment law, and employers have a responsibility to prevent and address such situations.

Thus, the statement that hostile environment harassment is not illegal is incorrect, confirming that the assertion in the question is false. Understanding the nuances of both types of harassment highlights the importance of maintaining a respectful and equitable workplace for all individuals.