Employment is the total number of persons on establishment payrolls employed full or part time who received pay for any part of the pay period which includes the 12th day of the month. Temporary and intermittent employees are included, as are any workers who are on paid sick leave, on paid holiday, or who work during only part of the specified pay period. A striking worker who only works a small portion of the survey period, and is paid, would be included as employed under the CES definitions. Persons on the payroll of more than one establishment are counted in each establishment. Data exclude proprietors, self-employed, unpaid family or volunteer workers, farm workers, and domestic workers. Persons on layoff the entire pay period, on leave without pay, on strike for the entire period or who have not yet reported for work are not counted as employed. Government employment covers only civilian workers. With the release of NAICS-based estimates in June 2003, the scope and definition of Federal Government employment estimates changed due to a change in source data and estimation methods. The previous series was an end-of-month federal employee count produced by the Office of Personnel Management, and it excluded some workers, mostly employees who work in Department of Defense-owned establishments such as military base commissaries. Beginning in June 2003, the CES national series began to include these workers. Also, Federal Government employment is now estimated from a sample of Federal establishments, is benchmarked annually to counts from unemployment insurance tax records, and reflects employee counts as of the pay period including the 12th of the month, consistent with other CES industry series. The historical time series for Federal Government employment was revised to reflect these changes.