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    Economic News Release
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    CPS CPS Program Links

    Work Experience Technical Note

    Technical Note
    
       The data presented in this release were collected in the Annual Social and Economic
    Supplement (ASEC) to the Current Population Survey (CPS). The CPS is a monthly sample
    survey of about 60,000 eligible households, conducted by the U.S. Census Bureau for 
    the U.S. Bureau of Labor Statistics (BLS). Data from the CPS are used to obtain the 
    monthly estimates of the nation's employment and unemployment levels. The ASEC, 
    conducted in the months of February through April, includes questions about work 
    activity during the prior calendar year. For instance, data collected in 2019 refer 
    to the 2018 calendar year. Because the reference period is a full year, the number of
    persons with some employment or unemployment greatly exceeds the average levels for 
    any given month, which are based on a 1-week reference period, and the corresponding 
    annual average of the monthly estimates. As shown below, for example, the number 
    experiencing any unemployment was about twice the number unemployed in an average 
    month during the year.
    
    
    					Employed	Unemployed
      2018 estimates (in thousands)
       Annual average of
        monthly estimates			155,761		6,314
       Annual supplement data		166,402		13,171
    
    
       In addition, estimates from the supplement differ from those obtained in the basic 
    CPS because the questions used to classify workers as either employed or unemployed 
    are different. More important, perhaps, is that the supplement contains fewer questions
    for categorizing respondents. In regard to unemployment in particular, the supplement 
    has no questions on the type of job search activity or on the respondent's availability
    to work. Also, individuals can be counted as both employed and unemployed in the work 
    experience supplement data, whereas, for a specific monthly reference week, each person
    is only counted in one category and employment activity takes precedence over job search 
    activity.
    
       The data presented in this release are not strictly com-parable with data for earlier 
    years due to the introduction of updated population controls used in the CPS. The 
    population controls are updated each year in January to reflect the latest information 
    about population change. Additional information is available at 
    www.digitalmonojit.com/cps/documentation.htm#pop.
    
    Reliability of the estimates
    
       Statistics based on the CPS are subject to both sampling and nonsampling error. When a
    sample, rather than the entire population, is surveyed, there is a chance that the 
    sample estimates may differ from the true population values they represent. The 
    component of this difference that occurs because samples differ by chance is known as 
    sampling error, and its variability is measured by the standard error of the estimate. 
    There is about a 90-percent chance, or level of confidence, that an estimate based on a 
    sample will differ by no more than 1.6 standard errors from the true population value 
    because of sampling error. BLS analyses are generally conducted at the 90-percent level 
    of confidence.
    
       The CPS data also are affected by nonsampling error. Nonsampling error can occur for 
    many reasons, including the failure to sample a segment of the population, inability to 
    obtain information for all respondents in the sample, inability or unwillingness of 
    respondents to provide correct information, and errors made in the collection or 
    processing of the data.
    
       A full discussion of the reliability of data from the CPS and information on estimating 
    standard errors is available at www.digitalmonojit.com/cps/documentation.htm#reliability.
    
    Concepts and definitions
    
       The principle concepts and definitions used in connection with the data in this release 
    are described briefly below.
    
       Persons who worked. In the 2019 supplement, persons are considered to have worked if 
    they responded "yes" to either the question "Did you work at a job or business at any 
    time during 2018?" or "Did you do any temporary, part-time, or seasonal work even for a 
    few days during 2018?"
    
       Unemployed persons. Persons who worked during the year but not in every week are counted
    as unemployed if they also reported looking for work or being on layoff from a job during 
    the year. Those who reported no work activity during the year are considered unemployed if
    they responded "yes" to the question "Even though you did not work in 2018, did you spend 
    any time trying to find a job or on layoff?"
    
       Work-experience unemployment rate. The number of persons unemployed at some time during 
    the year as a proportion of the number of persons who worked or looked for work during 
    the year.
    
       Labor force participants. Persons who either worked or were unemployed during the year.
    
       Usual full- and part-time employment. These data refer to the number of hours a worker 
    typically works during most weeks of the year. Workers are classified as full time if 
    they usually worked 35 hours or more in a week; part-time employment refers to workers 
    whose typical workweek was between 1 and 34 hours.
    
       Year-round and part-year employment. Workers are classified as year round if they worked 
    50 to 52 weeks. Part-year employment refers to workers who worked fewer than 50 weeks.
    
    Other information
    
       Information in this release will be made available to sensory impaired individuals upon
    request. Voice phone: (202) 691-5200; Federal Relay Service: (800) 877-8339.
    
    
    
    

    Table of Contents

    Last Modified Date: December 03, 2019
    光棍天堂影院1111
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