The long-term trend toward lower-quality jobs in the United States continued between 2001 and 2004. Industrial job quality fell 1.6 percent nationally between 2001 and 2004. The decrease in occupational job quality was not quite as great at 0.9 percent. Thus, overall U.S. job quality dropped 2.5 percent during the three years, causing the U.S. average wage to be 2.5 percent less than it otherwise would have been. Arizona’s job quality fell between 2001 and 2004 at a pace worse than the national average. Relative to the national average, the industrial and occupational job mixes each slipped a bit more than 0.3 percent during the three years, for an overall decline of 0.7 percent. In Arizona, job quality in 2004 was 2.0 percent below the national average, but Arizona ranked 23rd among all states.

The demand for new workers in STEM (science, technology, engineering and mathematics) occupations in Arizona is a function of net job growth in these occupations in the state and the number of workers leaving STEM jobs in Arizona. Employees may leave their position for various reasons, including to retire, to move out of the state, or to change their profession. The supply of new workers in STEM occupations in Arizona is a function of the number of new college graduates in related majors, the number of workers moving to the state who are qualified to fill STEM jobs, and the number of Arizonans who are qualified to fill STEM jobs moving from a non-STEM to STEM occupation.

The best way to evaluate job quality would be to analyze a dataset that presents both occupational and industrial data, but the only dataset of this nature available by state comes from the decennial census. It is severely limited by small sample size, the latest data are for 1999, and the 1999 data are not consistent with the 1989 data. Thus, the initial work by the Seidman Institute on job quality ("Job Quality in Arizona", March 2005, presented data on Arizona job quality from several sources of either industrial or occupational data. "Job Quality in Arizona Compared to All States" is an extension of the March 2005 report. Arizona’s job quality in the latest year and its change over time is compared to the national average and is ranked among the 51 “states” (including the District of Columbia).