Productivity refers to metrics and measures of output from production processes, per unit of input. Labor productivity, for example,'s typically measured as a ratio of output per labor-hour, an input. Productivity may be conceived of as a metrics of the technical or engineering efficiency of production. As such quantitative metrics of input, and sometimes output, are emphasized. Productivity's distinct from metrics of allocative efficiency, which take into account both the value of what's produ… (More on Productivity)