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While data collected by the Current Population Survey (CPS) of the United States showed an increase in the annual average number of hours of paid employment for the period 1969–1987, data collected from employers showed a decrease. A probable, if partial, explanation is that employers report hours for employees at their establishment alone. If people are working longer hours because they work at more than one job, then establishment surveys may not be a good measure of workers` hours. And multiple jobholding did increase in the 1980s, especially among women. In addition, multiple jobholders tend to work long hours. It is also possible that the data collected from establishments do not adequately represent hours at all business establishments because of various data collection and response problems.