Wash. Admin. Code § 192-600-025
If the department determines that the employee failed to provide proper notice to the employer, the employee's benefits will be denied for a period of time equal to the number of days that notice was insufficient.
Example: If an employee should have provided thirty days' notice for a qualifying event the employee was aware of sixty days in advance, but instead the employee provided notice fifteen days prior to the scheduled leave, the department will deny paid family or medical leave benefits for fifteen days. The employee is not required to file a new initial application for benefits. After the required fifteen days, the employee may start receiving benefits upon proper filing of weekly claims if otherwise eligible.
Wash. Admin. Code § 192-600-025