Your 401k shouldn't be an issue, but in Washington state, paid vacation, holiday, and sick leave and severance pay are considered voluntary benefits that a business may choose to offer workers. Washington State law does not require a business to provide these benefits. Even though there is no state law requiring a business to pay these benefits upon termination, if the business promises workers these benefits and does not follow through, workers can contact an attorney or file in small claims court for their unpaid benefits.