Neither the California Labor Code nor the federal Fair Labor Standards Act require employers to offer severance agreements to departing employees. Instead, severance agreements are provided by employers to accomplish a specific goal.
You and your employer must follow certain legal formalities for a severance agreement to be enforceable. You must ensure that the agreement is in writing and that your employer has signed it. Sometimes, you might also need a witness or have it notarized. Failing to adhere to these formalities can void the agreement.
Most employers offer a severance agreement established by company policy that outlines the financial terms on which the employee will leave the company. Sometimes, employees can negotiate those terms. Regardless, they must sign the agreement to receive their severance package.