In this Friday, Nov. 16, 2012, photo, an employee works at a shipping area of Generac Power Systems, Inc., one of the largest makers of residential generators in the U.S., in

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In this Friday, Nov. 16, 2012, photo, an employee works at a shipping area of Generac Power Systems, Inc., one of the largest makers of residential generators in the U.S., in Whitewater, Wis. A survey shows U.S. manufacturing shrank in November to its weakest level since July 2009, the first month after the Great Recession ended. Worries about automatic tax increases in the New Year cut demand for factory orders and manufacturing jobs. (AP Photo/Nam Y. Huh) less