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From July 1999, APSED replaced the Continuous Record of Personnel (CRP) as the source for APS employment statistics. Data held on the CRP was migrated to APSED to form the historical series for ongoing employees.

APSED records information for both ongoing and non-ongoing employees, including staff on leave without pay and other unpaid inoperative staff. Agencies provide data from their human resource systems to the APS Commission regularly on staff movements such as engagements, promotions and separations, as well as a staffing snapshot at 30 June each year. This information is used to verify and, where necessary, update APSED data. While the APS Commission has tried to ensure data integrity and has undertaken an extensive audit of data provided by agencies, it cannot accept responsibility for inaccuracies in the data supplied.

When referring to the data in this publication, or making comparisons with previous Bulletins, the reader should be aware that there have been changes over time to the conceptual definitions which support the data. Differences in data definitions due to the migration of CRP to APSED are explained briefly below and in detail in the Explanatory Notes at Appendix 1.