Map for L. N. Johnson Enterprises, Inc. dba Express Employment Professionals Search | Advanced Search | New Members | Coupons and Discounts | All Categories Employment & Staffing >> Employment Contractors L. N. Johnson Enterprises, Inc. dba Express Employment Professionals 246 Thompsonville RoadMcMurray, PA 15317 | directions (412) 736-4788 Visit Site If your business isn't here, contact us today to get listed!