U.S. real gross domestic product increased at an annual rate of 4.6 percent in the second quarter, according to the third estimate by the U.S. Department of Commerce. The growth rate is up from the previous second-quarter estimate of 4.2 percent; it is significantly stronger than the first quarter, when real GDP fell 2.1 percent.

CNBC reports the US economy grew at its fastest pace in nearly three years in the second quarter and activity was broad-based, in a bullish signal for the remainder of the year.

Growth in the staffing industry is strongly correlated with GDP growth, according to research from Staffing Industry Analysts.