What misconduct if someone seduces her boss to gain promotion after promotion the boss threatens to expose their affair if she doesn't not sleep with him?

This situation involves several forms of misconduct, including sexual harassment, coercion, and abuse of power. The boss is engaging in unethical behavior by using their position of authority to manipulate and pressure the employee into engaging in a sexual relationship. This behavior is not only inappropriate and unprofessional, but it is also illegal in many jurisdictions.

The employee should report the boss's behavior to HR or another appropriate authority within the company. They may also consider seeking legal advice and support to address the situation and protect themselves from further harm. It is important to remember that no one should ever be forced to engage in sexual activity in exchange for job opportunities or promotions.