Worker Injured by Reversing Bulldozer, Construction Company Fined $90,000 in Ottawa

October 30, 2020

Labour, Training and Skills Development

Convicted: Aecon Construction Ontario East Limited3232 Carp Road, Carp, Ontario, a company in the business of  asphalt paving and construction.

Location of Workplace: A worksite located on a part of Highway 417 between Maitland Avenue and Island Park Drive in Ottawa.

Description of Offence: A worker received critical injuries after contact with a reversing bulldozer. The opertaor of the bulldozer should have had the assistance of a signaller watching for people who may have been in the path of the bulldozer .

Date of Offence: June 11, 2018.

Date of Conviction: October 29, 2020.

Penalty Imposed:

  • Following a guilty plea, Aecon Construction Ontario East Limited was fined $90,000 in provincial offences court in Ottawa by Justice of the Peace Herb Kreling; Crown Counsel Alicia Gordon-Fagan.
  • The court also imposed a 25-per-cent victim fine surcharge as required by the Provincial Offences Act. The surcharge is credited to a special provincial government fund to assist victims of crime.


  • On June 11, 2018, a worker and an equipment operator were working as a team on a part of Highway 417 in Ottawa. The worker was tasked with taking elevation readings using a GPS laser and marking out the readings on the ground, while the equipment operator was operating a bulldozer.
  • The worker taking the readings could not receive a signal for the GPS equipment and attempted to locate a signal by walking to different areas of the site. While doing so the worker was facing west, back to the bulldozer.
  • The bulldozer’s operator was in the process of back-blading material, a process where the operator pushes material forward and then runs the blade over the material in reverse. The operator placed the bulldozer in reverse (which activated the back-up alarm on the bulldozer) looked over one shoulder and proceeded to reverse after not noticing anyone behind. The back-up alarm could not be heard over the noise of Highway 417.
  • The worker taking readings was knocked to the ground.
  • The bulldozer operator noticed two survey workers running toward the bulldozer. The operator stopped the bulldozer, saw a hardhat on the ground, exited the bulldozer and found the worker on the ground.
  • As a result of the contact, the worker suffered critical injuries
  • A visibility and line-of-sight assessment was conducted by a Ministry of Labour, Training and Skills Development ergonomist. The line-of-sight assessment identified any blind spots or areas with an obstructed view from the perspective of the equipment operator.
  • The visibility and line of sight assessment determined that the injured worker would not reasonably have been noticed by the equipment operator while the bulldozer was reversing and the ability for the operator to view the worker within the rear-view mirror while reversing the bulldozer would have become progressively more obstructed. In such a scenario, a signaller should have been used to assist the equipment operator.
  • Section 104, subsection 3 of O. Reg. 213/91 – the Regulation for Construction Projects – states that operators of vehicles, machines and equipment shall be assisted by signallers if the operator’s view of the intended path of travel is obstructed and/or a person could be endangered by the vehicle, machine or equipment or by its load.
  • The Occupational Health and Safety Act states that an employer shall ensure that the measures and procedures prescribed are carried out in the workplace.
  • Accordingly, Aecon Construction Ontario East Limited, as an employer, failed to ensure that the equipment operator was assisted by a signaller as required by the regulation.