From the Hotline: Mandatory Show-Up Pay
Question: Does Washington State have mandatory “show-up” pay if an employee is scheduled and then sent home?
Answer: No. If employees show-up for work, but the business has no work for them and sends them home, there is no requirement for “show-up” pay. Under the rules in Washington, employees must be paid for actual hours worked. Businesses are not required to give prior notice of a schedule change. You may, however, set a company standard for minimum pay when that happens. Just be sure to apply your policy consistently throughout your organization.
For more information, visit: http://www.lni.wa.gov/WorkplaceRights/Wages/PayReq/ShowUp/default.asp