Yes. There is no legal requirement that a company provide severance pay under state or federal law. So, if the Company establishes a severance pay plan, it may require that participants execute a waiver of claims before receiving benefits. Courts will enforce these release agreements if the employer can show that the ex-employee signed voluntarily with the knowledge of what he signed. There are some special rules for waiving age discrimination claims under federal law, but those pertain to the formalities of the release and do not prohibit such release.