As used in this section, the term "wages" does not include any obligation between a client and a covered employee for payments beyond or in addition to the covered employee's salary, draw, or regular rate of pay, such as bonuses, commissions, severance pay, deferred compensation, profit sharing, vacation, sick, or other paid-time off pay, unless the PEO has expressly agreed to assume liability for such payments in the professional employer agreement; and
§ 285.730, RSMo