2019 Maryland All In One Labor Law Posters for Workplace Compliance INCLUDES STATE AND FEDERAL LABOR LAW POSTINGS: U.S. State and Federal Employment Laws require employers to post a Labor Law Poster at each of their locations WATER RESISTANT DOUBLE SIDED LAMINATION: 24" x 40" Full Color Heavy-Duty Water Resistant Laminated Posters. EQUIPPED WITH QR CODE: Our Labor Law Posters are equipped with a QR Code designed to keep your business up-to-date and posting compliant. ATTORNEY APPROVED: Protection from Employee Lawsuits.