Because of difficulties in measuring productivity of farms and nonmarket activities, the most widely used measure of labor productivity growth is the rate of increase in nonfarm business sector output per hour worked.
There are no difficulties in measuring productivity of farms.
mnli hypothesis: There are no difficulties in measuring productivity of farms. premise: Because of difficulties in measuring productivity of farms and nonmarket activities, the most widely used measure of labor productivity growth is the rate of increase in nonfarm business sector output per hour worked.