Measuring and improving performance

Measuring our impact against Target Zero is necessary to manage and improve performance. We measure against a wide array of best practice indicators.

Health and safety indicator How it is determined
AC2E score Based on the four concepts of the AC2E model (Awareness, Competence, Compliance, Excellence).
Behaving Safely score Based on employee and subcontractor observations of workplace behaviours.
Risk assessment score Based on whether required controls have been implemented.
Don’t Walk By Frequency Rate (DWBFR) Determined by the number of hazard reports (DWB) per person, per year.
National Examination Board in Occupational Safety and Health (NEBOSH) Score based on the number of people who have successfully attained the NEBOSH Certificate as a percentage of the population for whom it is required. All senior managers must pass NEBOSH Certificate training.
RIDDOR*-free contracts The number of contracts free of RIDDOR reportable accidents as a percentage of the total number of operational contracts in the preceding 12 months.
Accident Frequency Rate (AFR) Based on the number of RIDDOR accidents per 100,000 hours worked for employees and subcontractors combined.
All Accident Frequency Rate (AAFR) Determined by the number of injury incidents recorded, of any severity, per 100,000 hours worked for both employees and subcontractors combined.
Near miss frequency rate The number of reported near misses per 100,000 hours worked. We aim to increase this rate as the more near misses are reported, the fewer accidents we will have.
Critical issue frequency rate Based on the number of injuries and near misses related to critical issues (the top five safety issues determined by each business) per 100,000 hours worked.
Lost time incident frequency rate Determined by the number of incidents that result in one day or more (not including the day of the accident) off work (or unable to undertake normal duties) per 100,000 hours worked for both employees and subcontractors combined.

* Reporting of Injuries, Diseases and Dangerous Occurrences Regulations.

Peer reviews

In the context of Carillion’s wider governance and risk management framework, health and safety is managed rigorously through our peer review model.

This provides us with assurance that projects are delivering on their financial and operational targets, and that project risks are being managed effectively. The Carillion Board requires each business unit to undertake an annual risk-based programme of peer reviews undertaken by independent, experienced and competent personnel from a similar background.

When it comes to health and safety, we organise annual business-to-business peer reviews to:

  • provide independent validation of AC2E assessments and key performance indicators
  • provide assurance to management teams that key health, safety and sustainability risks are being managed appropriately
  • review performance
  • exchange learning between businesses and establish best practice elsewhere.


of senior managers hold the National Examination Board in Occupational Safety and Health (NEBOSH) General Certification


employees involved in Safety Action Groups


Raising the safety of commercial vehicles

Three Carillion fleet vehicles

Carillion received accreditation for the Freight Transport Association’s Van Excellence scheme to raise the standard of van operations in the UK.

Working with supply chain partners, Carillion Fleet Management set safety standards and created a prototype van. It includes additional grab handles and illuminated steps and puddle lights to assist entry and exit in dark conditions, and on-board weighing equipment with an integrated reverse camera monitor.

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