A termination clause is a provision in the employment contract that defines the rights of the employee at the termination of the employment relationship. It typically determines how much notice period and severance an employee is entitled to when the termination is on a without-cause basis.
Basically, a severance agreement is a waiver or release of liability that the outgoing employee signs, protecting the business from lawsuits. These agreements are usually part of a larger severance package that includes compensation, outplacement services, and other benefits in exchange for the employee's signature.