When Your OT Expert Retires: How to Keep Critical Knowledge in the Business

Ask what people interrupt them for

Review a few ordinary weeks with the retiring employee. Which requests reached them? What did they decide, fix, explain or approve? Include support provided to other plants, supplier conversations and informal reviews that never appeared on a project plan.

Ask colleagues what they rely on this person to know. Controls engineering may depend on their understanding of equipment history. Security may rely on them to interpret an unusual connection. Operations may expect them to know which supplier can help during an outage. These are different responsibilities with different successors.

Capture the work in plain terms and name its future owner. Some responsibilities may belong in the new position. Others may be better assigned to an existing specialist or shared through a documented process. Settle that division before writing a vacancy that asks one person to inherit everything.

Capture the reason behind the exception

An equipment list tells the successor what exists. The surrounding explanations help them understand how to work with it. Ask which arrangements are unusual, why they were adopted, who approved them and what would need to change before they could be replaced.

Document where authoritative drawings, configuration records, recovery material and supplier contacts are maintained. Confirm that appropriate employees can find and use them. Transfer access through approved organizational processes so ongoing support does not depend on the retiring person's private accounts or personal files.

Keep sensitive technical records in the company's controlled systems. A recruiting partner needs enough context to understand the role and evaluate experience. The public job advertisement does not need a map of the environment or a list of its unresolved weaknesses.

Make overlap active

In a fictional succession plan, the incoming engineer spends the first days attending meetings and watching the departing expert work. That provides useful context, but it can leave both people overestimating how much has transferred. They need a stage where the successor takes the lead while support is still available.

Choose routine activities appropriate to the person's authority. The successor might prepare a supplier support request, locate the approved recovery documentation or explain a proposed change to the relevant reviewers. The experienced employee watches for missing context and updates the documentation with them.

Use these activities to decide what still needs attention. 'Handover complete' is difficult to assess. 'The successor can locate the support procedure, identify the approver and explain the local constraints' gives the manager something concrete to review.

• Name the work being transferred and the person receiving it.
• Locate the records needed to carry out that work.
• Let the successor explain or perform an approved routine activity.
• Record unanswered questions and assign someone to resolve them.

Recruit for the next version of the role

The departing employee may have built their position over many years. Decide what the business now needs from the successor. A growing company might need clearer program ownership; an established team might need deeper engineering capacity. Explain the current assignment and the direction it is expected to take.

During interviews, ask candidates about joining an unfamiliar environment. How did they learn its history? How did they check documentation against practice? When did they ask for help? Look for experience building useful working relationships alongside technical competence.

Protect time for the retiring employee to support the transition. If they remain responsible for their entire workload until the last day, knowledge transfer will compete with every urgent request. Assign the manager responsibility for resolving that conflict and keeping the hiring and handover plans connected.

When the transition ends, make the new points of contact visible to the team and suppliers. The business needs a reliable way to get the work done after the familiar phone number is no longer the right one to call.