The Bureau of Labor Statistics (BLS) defines the employment-population ratio as the ratio of total civilian employment to the civilian noninstitutional population. Simply put, it is the portion of the adult population (16 years and older) that is employed. The ratio is one of several indicators used to assess labor market strength, and is reported monthly alongside the unemployment rate and other statistics by BLS. It is used primarily as a measure of job holders and to track the pace of job creation, relative to the adult population, over time. Recent estimates show that employment as a percentage of the civilian population has not returned to pre-recessionary levels. In November 2007, the employment-population ratio was 62.9%, indicating that 62.9% of the adult population had a job in that month. This rate fell steadily during the recession and several months beyond, before stabilizing around 58.5% in October 2009. Between October 2009 and March 2014, the ratio fluctuated within 0.3 percentage points of 58.5%. Since then, the employment-population rate has climbed slowly to 59.3%, its value in April 2015. The slow pace of growth in the employment-population ratio in the post-recessionary period is further remarkable because it coincided with a sharply falling unemployment rate. This is interesting because, in recent decades, the employment-population ratio has tracked the unemployment rate closely in the United States, though moving in opposite directions. Based on this pattern, the expectation was that falling unemployment would be met with a rising employment-population ratio; but this has not been the case. The new pattern points to significant changes in the labor force participation rate (i.e., a decline) that counterbalance the effects of a lower unemployment rate on adult employment. This report provides an overview of the employment-population ratio. It opens with a discussion of its value as a labor market indicator, noting its key features and limitations. This is followed by an examination of long-term and recent trends. The contribution of demographic and economic factors to recent patterns is explored at the close of the report. Several features of the employment-population ratio make it an attractive employment indicator for labor market analysis. It is easy to interpret, and can be used to make meaningful comparisons across time and groups with dissimilar population size. Because it takes into account the impacts of both labor force participation and unemployment, it is a useful summary measure when those forces place countervailing pressures on employment. The employment-population ratio has a simple interpretation: it is the share of adults who are employed. As such it provides information about the magnitude of employment (relative to population), and the degree to which an economy is using a key productive resource (labor). This is important to labor market analysis, but has broader economic significance as well (i.e., to national output and growth). That the employment-population ratio gauges employment against population , and not the labor force , is an interpretational advantage over several other labor market indicators, including the unemployment rate. As the U.S. economy recovers from the most recent recession, considerable discussion has centered on the unemployment rate and how its decline should be interpreted. Analysts have debated the extent to which a falling unemployment rate indicates a strengthening labor market, or signals an exodus of discouraged workers from the labor force. Unlike the unemployment rate, which assesses the job status of workers in the labor force, the employment-population ratio places employment in the context of a much broader group of potential workers (i.e., the adult population). This feature provides the employment-population ratio a degree of stability, because movement in and out of the labor force only registers in the numerator of the ratio. When the employment-population ratio rises, it means that a larger percentage of the adult population has a job. By contrast, the unemployment rate can fall without a corresponding rise in employment if unemployed workers leave the labor force. Placing employment in the context of the adult population permits more meaningful comparisons over time and across countries than mere employment levels. Consider, for example, that approximately 136.6 million workers were employed in the United States in February 2000. Fifteen years later, in February 2015, U.S. employment stood at nearly 148.3 million workers. Despite the addition of 11.7 million workers, the employment-population ratio in February 2015 (59.3%) was 5.3 percentage points below the ratio for February 2000 (64.6%), indicating that the adult population grew faster than employment over that period. Similarly, controlling for population facilitates international comparisons, particularly between countries with markedly different population sizes. The employment-population ratio has additional value as a summary measure when the unemployment rate and labor force participation rate send conflicting signals about employment growth. To see this, it helps to look at the employment-population ratio in terms of its principal components: (1) the rate at which the adult population participates in the labor market (i.e., the labor force participation rate), and (2) the proportion of jobseekers who are able to secure employment (i.e., employment rate of the labor force). In other words, the employment-population ratio describes concurrently the proportion of the adult population who want jobs and the success rate of this group in obtaining jobs . This can be seen mathematically through a simple decomposition: That is: Because the labor force is the sum of all employed and unemployed workers (i.e., labor force = employment + unemployment), the expression can be re-written in terms of the unemployment rate: That is: Changes in the employment-population ratio are therefore determined by changes in the labor force participation rate and changes in the unemployment rate (or, equivalently, by changes in the labor force participation rate and the employment rate). All things equal, a rise in the labor force participation rate or a decline in the unemployment rate will increase employment. When they occur together (i.e., a simultaneous rise in labor force participation and drop in the unemployment rate), the employment-population ratio will necessarily increase. This is intuitive, because when a larger share of the population are seeking employment and finding it with greater success, employment will rise. Similarly, a simultaneous decline in labor force participation rate and increase in the unemployment rate will cause the employment-population ratio to fall. The net impact on employment is less clear when the unemployment rate and the labor force participation rate are both rising or both falling . In these cases, the employment-population ratio is a particularly valuable summary measure of these competing forces on employment. Under the both falling scenario, for example, the share of adults looking for jobs decreases (i.e., the labor force participation rate falls) but the portion of jobseekers who successfully find employment increases (i.e., the unemployment rate falls). Under these conditions, the labor force participation rate and employment rate place countervailing pressures on employment. Because it accounts for both factors, the employment-population ratio reports their net impact on employment. This feature of the indicator was particularly useful to labor market assessments following the 2007-2009 recession, when declining unemployment coincided with declining labor force participation. Like all labor market indicators, the employment-population ratio has limits. For one, the employment-population ratio does not provide the full picture of labor market conditions. It does not provide information about hours of work (i.e., whether jobs held are part-time or full-time), wages and benefits, or job quality. On its own, the employment-population ratio cannot be used to assess labor force flows. That is, additional information is needed to determine whether a drop in employment represents more people exiting employment or fewer new entrants. Additional information is also needed to determine whether changes in the employment-population ratio are driven by cyclical factors (i.e., the impacts of economic recession and growth on labor demand) or structural factors (e.g., demographic trends). Figure 1 plots the employment-population ratio from January 1950 to April 2015. In addition to providing a long-term view of the employment-population ratio, the figure illustrates the indicator's cyclical nature. Sharp declines in the ratio coincide with each of the 10 recessions shown in the figure, followed by growth during expansions. Between 1960 and 2000, the employment-population ratio more than recovered from each economic downturn and followed an upward trend. After peaking at 64.7% in April 2000, however, the trend reversed. Although the employment-population ratio continued to rise during periods of expansion, its gains were not sufficient to offset the large declines that occurred during the 2001 and 2007-2009 recessions. Consequences of the new employment-population ratio trend depend importantly on what is driving the change, and whether recent developments are permanent or transitory. Some information about drivers and the permanency of the new trend can be gained from a look at the employment-population ratio's principal components: the unemployment rate and the labor force participation rate. Figure 2 plots the employment-population ratio (blue line, left axis) and the unemployment rate (red line, right axis) from January 1995 to April 2015. It shows that, until recently, movements in the employment-population ratio mirrored those of the unemployment rate, falling with a rising unemployment rate and rising as the unemployment rate falls. The close tracking of the employment-population ratio and unemployment rate can be seen until the beginning of 2010. After that point, the unemployment rate falls steadily, with little movement in the employment-population ratio. These patterns suggest that between 1995 and 2010, the unemployment rate (i.e., the success rate of jobseekers) was the driving factor behind movement in the employment-population ratio. More recently, however, the disconnect between the employment-population ratio and the unemployment rate patterns points to changes in labor force participation. Several factors can affect labor force participation. Demographics such as age and gender have played an important role in the recent decline in the overall labor force participation rate. The ongoing retirement of baby boomers, for example, accounts for some downward pressure on the overall labor force participation rate.