The development of a new geographic coding system for the Continuous Work History Sample.

This article describes the statistical development of the geographic coding system used to identify worker location for the Continuous Work History Sample. The new system--which is planned for implementation for data year 1993--will provide more accurate geographic distributions of workers within a residence concept than the old system could provide within an employer location concept. The article also presents the results of a pilot study that tested the operational aspects of the new system. The results provide some preliminary estimates of the effect of the revised codes on the geographic distribution of workers.