Washington Revised Code Title 49. Labor Regulations § 49.12.200. Women may pursue any calling open to men

That hereafter in this state every avenue of employment shall be open to women; and any business, vocation, profession and calling followed and pursued by men may be followed and pursued by women, and no person shall be disqualified from engaging in or pursuing any business, vocation, profession, calling or employment or excluded from any premises or place of work or employment on account of sex.