Productivity and Costs by Industry: Wholesale Trade, Retail Trade, and Food Services and Drinking Places Industries, 2010
"Labor productivity - defined as output per hour – rose in wholesale trade, retail trade, and food services and drinking places, in 2010, the Bureau of Labor Statistics reported today. Productivity increased as follows:

9.0 percent in wholesale trade,
3.9 percent in retail trade, and
1.9 percent in food services and drinking places..."