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Design and Construction of an Urban Runoff Research Facility
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Making zero work for construction safety in a post-zero world.

Fred Sherratt1, Dylan Harch1, Ayleen Perez1

  • 1Construction Safety Research Alliance, University of Colorado Boulder, 1111 Engineering Drive, UCB 428, Boulder, CO 80309, USA.

Journal of Safety Research
|February 25, 2025
PubMed
Summary

The "zero" approach to construction safety lacks empirical evidence of success. Statistical analysis of U.S. data from 2018-2022 found no significant difference in serious injuries and fatalities between companies using zero and those that do not.

Keywords:
ConstructionSafety PropagandaUSAZeroZero Harm

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Area of Science:

  • Occupational Safety and Health
  • Construction Management
  • Risk Management

Background:

  • The concept of 'zero' in construction safety is widely adopted despite limited empirical support.
  • Zero-based safety targets face both proponents and critics within the industry.

Purpose of the Study:

  • To critically evaluate the theoretical underpinnings of zero-based safety.
  • To statistically analyze the effectiveness of zero-based safety in reducing serious injuries and fatalities (SIF) in the U.S. construction industry.

Main Methods:

  • A critical review of theoretical considerations regarding zero-based safety.
  • Statistical analysis of U.S. SIF incident data (2018-2022) comparing companies with and without zero-based safety policies.

Main Results:

  • While firms using zero reported fewer incidents overall, statistical analysis showed no significant difference in SIF outcomes.
  • The data are inconclusive, failing to prove or disprove the efficacy of zero-based safety.

Conclusions:

  • Zero-based safety remains a contentious issue in occupational health and safety management.
  • Empirical data from the U.S. do not demonstrate clear benefits of zero-based safety, mirroring findings from the UK.
  • Emerging alternative safety management strategies may eventually supersede the zero-based approach.