If more than 5 hours are worked in a shift:
Workers must be allowed at least a 30-minute meal period. Workers must be at least 2 hours into the shift before the meal time can start, and the meal time cannot start more than 5 hours after the beginning of the shift.
You can actually read the policy here.
What you need to do is file a worker's right complaint form, and file it with the Washington State Department of Labor and Industry, who will investigate the matter and try to resolve it with the employer. By the way, it is against the law for a business to fire or otherwise discriminate against a worker for filing a complaint about a possible violation of their workplace rights - so the employer cannot retaliate against you for filing such a complaint form.
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