Marginal productivity or marginal product refers to the extra output, return, or profit yielded per unit by advantages from production inputs.Inputs can include things like labor and raw materials.

The weaker productivity does present a challenge for the Federal Reserve as unit labor costs were up 4.7% year over year in the first quarter, that being a combination of 5.0% increase in hourly ...

Productivity increased 2.2% in the third quarter, which is pretty strong by historical standards. But another data point in the report, something called unit labor costs, was revised lower .