 Employers put out more help wanted signs in May. Job openings rose to 8.1 million in May, a gain of about 200,000 from April, according to the government. The quits rate remained at 2.2% for the seventh consecutive month, a sign that fewer workers are seeing greener grass on the other side of the fence. There were big declines in the number of openings for hotels, restaurants and bars and private educational services, while openings increased in state and local government and manufacturing.