19.240.020
Unlawful actions — Remaining value — Lost/stolen gift certificates.
(1) Except as provided in RCW 19.240.030 through 19.240.070, it is unlawful for any person or entity to issue, or to enforce against a bearer, a gift certificate that contains:
(a) An expiration date;
...
(3) If a purchase is made with a gift certificate for an amount that is less than the value of the gift certificate, the issuer must make the remaining value available to the bearer in cash or as a gift certificate at the option of the issuer. If after the purchase the remaining value of the gift certificate is less than five dollars, the gift certificate must be redeemable in cash for its remaining value on demand of the bearer. A gift certificate is valid until redeemed or replaced.