Using this data, they project that labor force participation will continue to decline and reach as low as 61% by 2022. Similarly, Aaronson's research has contributed to the understanding of how changes in the business cycle affect labor force participation among different groups of workers in the U.S. economy. This research adds to the findings of economist Arthur Okun in 1973. Okun's research looked at the relationship between a "high pressure" economy and upward mobility. He found that economies characterized by high rates of expansion supported the upward mobility of workers in that economy. Aaronson and her colleagues' findings corroborated Okun's earlier research. They found that the relationship between labor force participation and the economic expansion was positive and was experienced by both more advantaged and less advantaged groups. This effect held whether the economy was expanding or contracting. However, changes in the business cycle had a relatively greater effect on the labor force participation of disadvantaged groups, including Hispanics, African Americans and people with less than a college degree, compared to whites. In addition, they found that the further expansion of an already strong economy still increased labor force participation among certain groups, particularly African American women with less than a college degree, and that these benefits held over time. Related to labor force participation, Aaronson has also done research on the relationship between the exchange rate and employment instability. This research takes into account the impact of economic globalization on labor force participation in the U.S. economy. Aaronson and her colleagues looked at how fluctuations in the exchange rate affect workers likelihood of changing jobs or switching industries. Their findings showed that the effect varies between employment sectors, and also depends on whether the movement in the exchange rate occurs on the import or export side. In manufacturing sectors, appreciation of the U.S. dollar makes it more likely that workers will keep their jobs and remain in the industry in which they are currently employed. For non-manufacturing sectors, the effect depends on whether the fluctuation in the exchange rate occurs on the export or import side. An appreciation in the export exchange rate increases job stability, whereas an appreciation in the import exchange rate makes worker movement between industries more likely. Aaronson and economist Andrew Figura investigated the consequences of inaccurate measurements of the number of hours worked over the business cycle on important macroeconomic phenomena, such as the markup of price over marginal cost and increasing returns to scale, as well as its implications for previously published research. They note that most research currently uses data from the Current Employment Statistics (CES) survey, which measures the number of hours paid as opposed to the aggregate number of hours worked.