(1) A "supplemental benefit payment" is a payment offered by an employer to an employee who is taking leave under Title 50A RCW.

(2) Employers may, but are not required to, designate certain benefits including, but not limited to, salary continuation, vacation leave, sick leave, or other paid time off as a supplemental benefit.

(3) Nothing in Title 50A RCW requires an employee to receive supplemental benefit payments.