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Working with others

Working with a consultant or external specialist

Someone external working inside: what to give them and what to recover at the end.

Updated on 13/08/2026

A consultant preparing your certification, a specialist building a process, an engineering firm running a project: outsiders who for months work as if they were inside. It is the relationship that closes worst and leaves the most accesses open.

What they genuinely need

They needThey do not need
To see and create in the area they work onTo see the rest of the organisation
To talk to your third parties if the engagement includes itTo be an administrator
To leave the work done and documentedTo keep access after the engagement

Important

Set an end date from day one, even if you do not know when it finishes. Dated access gets renewed if needed; undated access is still open three years later, and nobody misses it because that person was never part of the team.

What to agree beforehand

  1. 1

    What they take at the end

    Normally nothing. What they build stays in your organisation, not theirs.

  2. 2

    What they may show third parties

    If they will speak to your suppliers on your behalf, say so expressly.

  3. 3

    What happens to what they learned

    A consultant works for more companies in your sector. That is normal and worth bearing in mind.

Watch out

If the consultant will handle your clients' or your workers' documentation, that is no longer just an access: third-party data is involved. Review it with whoever handles data protection before granting it.

At the end

Worth knowing

The costliest failure in these relationships is not the access left open: it is that the process the consultant built is understood only by them, and six months later nobody knows how to change it.

Can they work with our suppliers?

If the engagement includes it and it is clear to everyone, yes.

Do they see what other teams do?

Only if you give it. Scope them to their area.

Is what they did recorded?

Yes, under their name, like anyone else.

A real case

The situation

A consultancy builds the documentary system for a certification and finishes the engagement.

What you do

  1. Their access is closed that day
  2. Someone inside walks through how it works with them

What you get

Six months later the team can change the process without re-engaging them.

The situation

A consultancy comes in to set the system up and still has administrator access six months after finishing.

What you do

  1. Grants the minimum access for their engagement
  2. Sets an expiry date when granting it
  3. Reviews at project close which accesses remain

What you get

The consultant works without friction and access closes itself when the work ends.

The situation

The external technician builds everything on their personal account.

What you do

  1. Uses a company service account

What you get

What was built outlives their departure.

The situation

They leave and nobody knows how they configured the process.

What you do

  1. Asks them to document the decisions before going

What you get

The team can touch it without fear.

The situation

The consultant sees client files outside their scope.

What you do

  1. Limits access to the project's files

What you get

They see theirs and nothing more.

The situation

They are asked for something out of scope and do it unrecorded.

What you do

  1. Records what was asked and what was delivered

What you get

The engagement is demonstrable.

The situation

They return a year later and their access was still active.

What you do

  1. Revokes access on closing

What you get

Access reflects who is collaborating today.

The situation

Nobody knows what they did during the project.

What you do

  1. Checks the log of their actions

What you get

The external party's work is auditable.

This article answers

  • give a consultancy access
  • working with an external specialist
  • consultant preparing our certification
  • temporary access for an external collaborator