Next, it helps to separate what you can see on an invoice from what shows up later in your margins.
The direct costs are the obvious ones: first aid or medical treatment, equipment repair, cleanup, investigation time, and any regulatory action. These costs are painful, but they are usually the smallest slice because they are counted once and booked to one place.
The bigger hit often comes from productivity loss. A crew that normally installs 40 meters of cable tray per shift might drop to 25 for a week because access is restricted, tools are out of service, and people are pulled into statements and re-planning.
Also, the staffing knock-on effects add up fast, especially on tight schedules. Overtime to catch up can run for 2 to 4 weeks, and replacement labour often means higher hourly rates plus lower output while the new person learns the site.
Retraining and re-induction time is real work: a supervisor might spend 2 hours per new starter for refreshers, and a competent operator can still need several shifts to reach normal pace. If one incident triggers a temporary stand-down or a change in method, you can also lose planned maintenance windows and create bottlenecks that push other trades idle time.
Quality fallout is the hidden cost many teams miss. Rushed rework, missed checks, and damaged materials can lead to returns, warranty call-backs, and scrap, especially in manufacturing, warehousing pick-pack, and field service.
That said, the longest-lasting costs are the ones that affect revenue and your ability to win work.
Client confidence can drop after a single reportable event, even if no one is seriously hurt. Some clients tighten site access, add audit requirements, or move you from preferred to probationary status, which slows approvals and stretches cash flow.
Tender eligibility can change overnight if your incident rate or corrective action performance flags in pre-qualification. Insurance premiums can rise at renewal, and the internal admin load grows through extra documentation, audits, and claims management.
Staff turnover is another multiplier: when experienced people leave, you lose job knowledge and increase onboarding volume, which raises risk again. If you do one thing, map both the visible costs and the hidden costs after your next incident so leadership sees the full iceberg, not just the tip.