You must install and maintain in every fixed establishment (the place where employees regularly report to work) employing 8 or more persons, a safety bulletin board sufficient in size to display and post safety bulletins, newsletters, posters, accident statistics and other safety educational material.
Wash. Admin. Code § 296-155-115
Order 74-26, § 296-155-115, filed 5/7/74, effective 6/6/74.