Paychex CEO Martin Mucci introduces the Paychex/IHS Small Business Jobs Index and its findings and employment trends. The index is a monthly measure of change in small business in the U.S. Mucci explains the Index for March remained at a peak, following sharp gains in January and February. The Mountain Region is leading year-over-year small business employment gains and produced the second-fastest all-employer job growth in the the nation in 2013, according to the Bureau of Labor Statistics.