Incident investigations are designed to answer the reason why, so you can prevent future incidents.
No one wants to investigate an incident because it reminds you that people are impacted by the incidents. However, an investigation process is vital to the success of any HSE program. Investigation processes driven by systematic urgency and discipline prevent future problems when they identify the cause of the problems. We learn from mistakes.
Projects should investigate any incident that could cause or did cause an injury.
Minor incidents every day are a precursor to future tragedy. Projects should investigate the small things with relentless consistency. Every employee has the responsibility of reporting an incident after they become aware of it.
Onyx Safety can/shall provide additional information for requirements from project to project.