By end of the 1980s, the company was manufacturing residential, commercial and industrial generators, and in 1989, Generac introduced the first gaseous-fueled automatic home standby system. In 1992, Generac began private labeling generator sets for Caterpillar, Inc.
Elements of the Productivity Ratio. The labor productivity ratio, in its simplest form, looks like this: output/input. Simply divide the amount of output you're getting by the amount of work you're putting into it. This requires you to assign numbers to both input and output so that you get a meaningful figure.
Method 1 Calculating Labor Productivity. Determine the country's Gross Domestic Product (GDP). The GDP of a country is the measure of goods and services produced within a specific time period. You'll need that number to calculate productivity based on GDP. 1  Fortunately, the GDP is a figure that's already calculated for you and delivered by one of the country's agencies.  The GDP for many countries is available online. Google the country's name plus GDP.