(Camp Hill) -- The state's fourth-largest industry is expected to post a number of "help wanted" ads in the next couple of months. Jim Runk, president of the Camp Hill-based Pennsylvania Motor Truck Association, says truck drivers are needed at a number of locations around the commonwealth. He says the profession isn't for everyone. "It can be a tough job with traffic, with the locations where the drivers have to go, and with dealing with shippers," he says. "There are a lot of things that go into making it a tough job, and a lot of people aren't cut out to do it." Runk says drivers are especially in demand these days because consumers are starting to spend more money and those products need to be shipped to stores and warehouses. J.P. Donmoyer, a trucking company in Ono, Lebanon County, is looking to hire more than 20 drivers by early next year. The trucking industry employs more than 400,000 Pennsylvanians.