WAC 357-31-470
WAC 357-31-470. How and when can an employee request to be off work on parental leave?
The employee must submit a written request for parental leave in accordance with the employer's leave policy. The employee must provide not less than thirty days' notice, except when a child's birth or placement requires leave to begin in less than thirty days, in which case the employee must provide notice as soon as is practicable.