Drug-Testing Programs and Their Impact on Workplace Accidents: A Time-Series Analysis

Frank S. Lockwood
Brian S. Klaas
John E. Logan
William R. Sandberg

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DOI: 10.2190/0DL9-5Y81-5C1J-XCT9

Abstract

Using a time-series design, this study examined the impact of introducing drug-testing programs on a workplace accidents. Using data from three separate hotels, we examined the impact associated with preemployment testing programs and the impact associated with programs that included both preemployment and random testing. The results of interrupted time-series analysis suggest that the introduction of preemployment testing did not affect the trend line for workplace accidents. However, the introduction of a program including both preemployment and random testing was associated with a significant reduction in workplace accidents resulting from a downward shift in the trend line for accidents. The implications for the design of drug-free workplace programs are discussed, as are the implications for future research.

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