Legislators may not be on board, but New Jersey Gov. Jon S. Corzine is having little trouble convincing industry and labor unions to back his plan to increase tolls on some of the nation's busiest highways. The proposed toll increases would be used to pay state debt and fund transportation. "We view this as also an economic stimulus package," said Robert Briant Jr., CEO of the Utility Transportation Contractors Association, which represents 1,200 firms. "This is going to create jobs, good jobs." Critics, however, contend those supporters are missing the point.