Prequalification: is a stack of documents enough?

We ask a contractor for 86 documents covering the seven steps of ISO 45001. The prequalification questionnaire has 5 sections, 42 criteria and 100 points. It looks impressive.

But there is an honest question worth asking yourself before the investigation board asks it: does all of this make the contractor safe?

No. Documents show the system on paper. They tell you about the maturity of management, but not about what will happen tomorrow at 07:40 on the +24 m level, when a foreman decides that “it’s only five minutes, I can manage without a harness”.

What prequalification does deliver:

• it screens out those who cannot build a system even on paper;
• it gives you a language for the conversation before the contract rather than after an accident;
• it moves the discussion from “we are all for good things” into something measurable.

A telling figure: out of 80 companies with critical risks, 50 returned the questionnaire to us. Thirty sent nothing at all. That is an answer too, and it came from the contractor itself.

What if we are not choosing the contractor?

That happens more often than we would like: a sole supplier, a procurement decision, a monopolist in the services market. In that case prequalification changes its function — it is no longer a filter but a risk map. You still know where the gaps are, and you know it before the work starts. That is not a reason to refuse; it is the terms of reference for a development plan and for stronger field supervision.

What if the contractor is more expensive precisely because of the paperwork?

He is not more expensive because of the documents. He is more expensive because he maintains a system: training, PPE, an occupational safety specialist, calibrated tools, medical check-ups. The cheap contractor did not save on paper — he saved on that. The difference in price is exactly the amount you either pay in advance or pay later: with stopped work, an investigation, downtime at the site and a conversation with a family.

“But accidents don’t happen every day. And people working for informal crews don’t get injured every day either.”

This is the most honest and the most dangerous argument.

The difference between “not every day” and “safe” is that the first is about frequency and the second is about consequences. Working at height without a fall-arrest harness almost always ends in nothing. And once it does not. We do not control frequency. What we control is how many barriers stand between a person and that one time.

Prequalification is a door, not a guarantee. The real work begins beyond it.

Colleagues, in your company is prequalification a real filter, or a procedure that everyone passes?