How to Assess Employees for Promotion Without Relying on Gut Feel

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October 6, 2026
Smita Dinesh
7:21 am

The promotion meeting has been going for forty minutes.

“He’s been here eleven years.”

“She hit 140% of target last year.”

“Everyone likes working with him.”

“She’s very visible in leadership meetings.”

All of these statements are true. All of them are offered with conviction. And not one of them tells you whether the person is ready for the role they’re being considered for.

Eventually, someone senior says, “I just have a good feeling about her.” The room relaxes. The decision is made.

Here’s a question worth sitting with: if that decision turns out to be wrong, could anyone explain why it was made?

Learning how to assess employees for promotion isn’t about removing judgement from the process. It’s about giving judgement better evidence than a good feeling.

Why Gut Feel Is So Persuasive, and So Unreliable

Gut feel isn’t random. It’s built from real experience, and experienced leaders often do sense something true about people. The problem is what gut feel tends to notice.

It notices the people we see most often. It notices people who remind us of ourselves. It remembers last quarter more clearly than the last three years. And it often confuses doing the current job well with being ready for the next one.

That last point has been studied closely. Economists Alan Benson, Danielle Li and Kelly Shue examined promotion data for almost 40,000 sales workers across 131 firms. Their research on promotions and the Peter Principle found that firms consistently promoted their best salespeople, even though those people went on to become worse managers, and even though other measurable factors predicted management quality better.

In other words, the most common promotion logic, “they’re great at their job, so let’s promote them”, is often the wrong logic.

What gut feel relies on	What it actually tells you
Tenure	Loyalty, not readiness
Strong results	Skill in the current role
Confidence in meetings	Comfort with visibility
Being well liked	Good relationships, not leadership
Similarity to leaders	Familiarity, not potential

None of these signals is worthless. They just answer different questions from the one that matters: can this person succeed in the next role?

How to Assess Employees for Promotion: Step by Step

1. Define the next role, not the current one

Start with what the target role requires. What decisions will this person make? Whose work will they be responsible for? What will be hard about the job?

This needs to be specific. “Leadership skills” isn’t enough. “Holds team members accountable for missed commitments without damaging the relationship” is something you can actually assess. Organisations with a clear competency framework have a big head start here. Teams building one often start with competency mapping certification for their HR professionals.

2. Separate performance from potential

Performance is how well someone does their current job. Potential is how likely they are to succeed in a bigger or different one. They’re related, but they aren’t the same thing.

Put them side by side in every promotion discussion. A strong performer with limited potential for management might be better rewarded with a senior specialist role. A solid performer with high potential might be the better promotion choice.

3. Gather more than one kind of evidence

No single source tells the whole story. Combining sources reduces the chance that one blind spot drives the decision.

Evidence source	What it adds
Performance data	Track record in the current role
Manager input	Day-to-day observations over time
360-degree feedback	How peers and team members see them
Behavioural assessment	Objective data on actual behaviour
Assessment centre	Behaviour in next-level situations

A behavioural assessment is particularly useful because it measures how people actually behave, rather than how they or others say they behave.

4. Observe behaviour in next-level situations

The most reliable way to predict how someone will handle a role is to see them handle situations from that role. That’s exactly what an assessment centre for promotion does. Candidates work through realistic simulations, such as a difficult conversation with a team member, a prioritisation exercise under time pressure, or a presentation to senior leaders, while trained assessors observe and rate specific behaviours.

5. Calibrate as a panel

Bring the evidence together in a structured discussion. Compare each candidate against the requirements of the role, not against each other’s personalities. Ask what the evidence shows, not who people prefer.

This is where much bias gets caught, often by a simple question: “What specifically did we see that supports that?”

6. Make the decision explainable

Before finalising a promotion, test it. Could you explain the decision to the people who weren’t promoted, using the evidence? If not, the decision probably needs more work.

Plan Fairer Promotion Decisions

Choosing the Right Level of Rigour

Not every promotion needs a full assessment centre. The level of rigour should match the stakes of the decision.

Promotion type	Suggested approach
Senior specialist or team lead	Structured interview plus behavioural assessment
First-line manager	Management assessment centre
Middle to senior leadership	Full development centre plus 360 feedback
Critical succession roles	Multi-day centre with development planning

A management assessment centre is especially valuable for first promotions into people leadership. This is the transition where the Peter Principle does most of its damage, and where strong individual performers are most likely to be promoted on the wrong evidence.

For higher-stakes and senior roles, a full assessment development centre adds depth. It provides multiple exercises and assessors, and a clear development plan for every participant, whether or not they’re promoted this time.

Don’t Forget the People Who Weren’t Promoted

Every promotion decision creates more people who didn’t get the role than people who did. How you handle that group matters as much as who you choose.

Evidence-based promotions make these conversations much easier. Instead of “We went another way”, the manager can say “Here’s what the assessment showed, here’s where you’re strong, and here’s what would make you ready next time.” That’s a conversation people can accept, and often one they find genuinely useful.

Linking those findings to a real development plan, such as stretch assignments, coaching or structured learning journeys, turns a disappointment into a path forward. It also keeps good people who might otherwise quietly start looking elsewhere.

Building the Capability In-House

Organisations that make many promotion decisions often build internal assessment expertise, so evidence-based promotion becomes part of how they work rather than a special project. HR and talent teams can develop this through programmes such as Assessment for Talent Management (ATM), which covers using assessment science for hiring, development, succession and leadership selection.

Since 2009, we’ve worked with more than 300 organisations. Leaders don’t usually resist evidence. They resist processes that ignore their experience. The best promotion systems use both: evidence to inform judgement, and judgement to interpret evidence. If you enjoy thinking about questions like these, the Friday Fulcrum explores them every week.

Gut feel is a good question to ask. It’s a poor answer to give.

Talk to Our Assessment Experts

Smita Dinesh

Smita brings fresh and innovative thinking to every task and assignment. With an extensive industry experience of over 25 years, her passion for human behavior assessments and the ability to connect the dots, read the room, engage, facilitate, coach, and solutionize has left an indelible mark on individuals, teams, and organizations.

Frequently Asked Questions

1. How do you assess employees for promotion objectively?

Define the requirements of the target role, separate current performance from future potential, gather evidence from several sources such as performance data, 360 feedback and behavioural assessments, observe behaviour in realistic next-level situations, and calibrate the decision as a panel.

2. What is an assessment centre for promotion?

An assessment centre for promotion is a structured process where candidates complete realistic simulations of the target role, such as role plays, case studies and presentations, while trained assessors observe and rate specific behaviours against defined competencies.

3. What is a management assessment centre?

A management assessment centre is an assessment centre designed specifically for management roles. It tests competencies such as leading people, delegation, decision making and handling difficult conversations, and is especially useful for first promotions into people leadership.

4. Why shouldn't promotions be based only on performance?

Strong performance shows someone is good at their current job, but the next role often needs different skills. Research on the Peter Principle has found that promoting the best individual performers can lead to weaker managers when other factors better predict management success.

5. What is the difference between performance and potential?

Performance is how well someone does their current role. Potential is how likely they are to succeed in a bigger or different role. Effective promotion decisions assess both separately.

6. How should you handle employees who weren't promoted?

Give specific, evidence-based feedback on their strengths and on what would make them ready next time, and connect that feedback to a real development plan. This keeps people engaged and makes promotion decisions easier to accept.

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