Friday, May 30, 2014

Hours Worked, No Change; Output, Up 42%

"[W]workers in the U.S. business sector worked virtually the same number of hours in 2013 as they had in 1998—approximately 194 billion labor hours. What this means is that there was ultimately no growth at all in the number of hours worked over this 15-year period, despite the fact  that the U.S population gained over 40 million people during that  time, and despite the fact that there were thousands of new businesses established during that time. And given this lack of growth in labor hours, it is perhaps even more striking that American businesses still managed to produce 42 percent—or $3.5 trillion—more output in 2013 than they had in 1998, even after adjusting for inflation. . . .One thing can be said for certain: the entirety of this additional output growth must have come from productive sources other than the number of labor hours. For example, businesses may increase output growth by investing in faster equipment, hiring more high-skilled and experienced workers, and reducing material waste or equipment downtime. In these and other cases, output may be increased without increasing the number of labor hours used. Gains in output such as these are indicative of growth in  labor productivity over a period."

Here's a figure showing the patterns of hours worked, output, and productivity in the aftermath of the Great Recession. Sprague explains: "[A]s the recession began, productivity flattened out as output and hours both fell approximately in concert with one another. Output and hours continued to fall together until the latter part of the recession, when the fall in output ceased but hours continued to decline. During this period there was substantial productivity growth: from the fourth quarter of 2008 through the fourth quarter of 2009, productivity grew 5.6 percent. In fact, this was the highest four-quarter rate of productivity growth recorded in more than 35 years."

Here's a figure showing productivity growth rates in the post-World War II era. Notice that annual rates of productivity growth were relatively rapid from about 1947-1973 at 3.2% per year. Then there is a dramatic slowdown of productivity growth in the 1970s, and while higher rates follow in the 1990s and more recently, the U.S. economy has failed to return to the more rapid productivity growth of the 1950s and 1960s. As I've noted from time to time in previous posts (for example, here and here), there is no more important question for the long-run health of the U.S. economy than whether a fairly robust rate of productivity growth can be sustained.
