Here are the companies that make actual, physical products, rather than providing a service or information. Typical manufacturing industry employers include food, clothing, and plastic product manufacturers, as well as sawmills and petroleum refineries.
Methodology for The PayScale Index: Trends in Compensation
The PayScale Index tracks quarterly changes in total cash compensation for full-time, private industry employees in the United States. In addition to a national index, it includes separate indices for specific industries, metropolitan areas, job categories, and company sizes. The PayScale Index uses 2006 average total cash compensation as a baseline.