The economic loss through the non-productivity of 20,000 drunkards is equal to one Chicago fire involving two hundred millions.
As far as his art creations show, this was a period of non-productivity.
1809, "quality of being productive," from productive + -ity. An earlier word for this was productiveness (1727). Economic sense of "rate of output per unit" is from 1899.
In business, a measure of worker efficiency, such as one hundred units per hour. In economics, involvement in the creation of goods and services to produce wealth.