As the Federal Reserve puzzles over what is holding back U.S. wages and productivity six years into the economic recovery, a pasta sauce company in New Jersey may offer some answers. Chelten CEO Steve Dabrow says factory work is becoming a harder sell with unemployment down at a seven-year low of 5.3 percent. The Bridgeport, New Jersey, company, which hired 60 people just last year, is not bidding up wages much for anyone save those with very specialist skills because, for now at least, it still manages to fill the vacancies.