Your Best Employee Isn't Always Your Best Leader

Lionel Messi captained Argentina to the 2022 World Cup. He also spent years being the best player on national teams that kept losing finals. The distance between those two versions of the same man is the most useful promotion lesson available to any manager.

Documented fact: Messi was given the Argentina captaincy in 2011, more than a decade before the World Cup win, and his individual awards arrived long before any senior international trophy. Whatever changed between 2011 and 2022, it was not his ability to score goals. His technical output was already world-class at the start of that period.

That is the pattern most organisations get wrong. We treat leadership as the natural next rung above excellence, as though being the best at the work automatically qualifies someone to be responsible for other people doing the work. It is a different job, measured by different outcomes, using a different set of skills.

The people question this raises

If your best individual contributor is already the most valuable person in the room, why would you move them into a role that is mostly about other people? Output and leadership answer two separate questions. Output asks: what did you produce? Leadership asks: what did the team produce because you were there? A person can be exceptional at the first and untrained at the second, and nothing in their track record will tell you which.

This is one of the oldest findings in management research. Laurence Peter's 1969 formulation — people rise until they reach a role they are not competent in, and then stop — is a joke with a serious core, and later economic research on sales organisations found much the same thing: firms systematically promote their best salespeople, and the teams those people inherit underperform. The mechanism is not incompetence. It is that we selected on the wrong evidence.

Where this shows up at work

• Your top seller becomes sales manager and quota drops twice — once because they stopped selling, and once because nobody taught them to coach.
• Your strongest engineer becomes a team lead and quietly keeps doing the hard work themselves, because delegating feels slower than doing it.
• A promotion was the only reward available, so leadership became a pay rise with a title attached and a team as collateral damage.
• A capable manager is stuck because your senior individual-contributor track pays less, so the only route to a decent salary is managing people they do not want to manage.

What leadership actually requires that output does not

Read the last row carefully, because it is the one that decides most cases. Some brilliant specialists genuinely enjoy the shift in satisfaction from personal craft to collective outcome. Many do not, and no training programme fixes that. Asking about it before the promotion is cheaper than discovering it afterwards.

A practical framework before you promote

A worked example

A 40-person software company has one obvious candidate for engineering lead: the person who wrote most of the platform. Applying the test, the manager finds strong evidence on signal one — two juniors credit her with their growth — but she answers signal two honestly: she does not want to run hiring or handle performance issues. So the company splits the role. She becomes principal engineer at the same salary band as the lead, owning architecture and mentoring. A quieter mid-level engineer with a talent for unblocking people takes the management track with a one-quarter trial running the onboarding cohort. Both roles are filled by someone who wants them. That outcome is unavailable to a company whose only reward is a management title.

Questions to ask the candidate

• Tell me about a time you helped someone else do better work than they could have alone. What did you actually do?
• What part of your current job would you miss most if you stopped doing it daily?
• How would you handle a team member whose work is slipping and who disagrees with your assessment?
• If your team hit its goal and your personal output halved, would that feel like a good quarter?
• What support would you need in the first 90 days, and from whom?

What readers often get wrong about this

• It is not an argument against promoting high performers. Many of the best managers were excellent contributors first; the point is to promote on leadership evidence, not on output alone.
• It is not a reason to keep someone stuck. If you decline a management promotion, you owe the person a different route to growth and pay — otherwise you have simply capped them.
• The football analogy has limits. A football captain has no hiring authority, no compensation decisions and no formal performance process. Captaincy is influence; management is influence plus institutional power. Do not read across too literally.

Interpretation, not established fact: Messi's later captaincy looked more effective partly because the squad around him changed and his role was redefined. That is a reading of publicly visible events, not a documented account of cause. The safer transferable point is this — leadership effectiveness depends on the system around the leader as much as on the leader.

First 30 days if you have already made the promotion

1. Rewrite the job description so it names people outcomes, not just delivery outcomes, and agree it with the new manager in writing.
2. Cut their individual delivery load by at least half, explicitly and publicly, so they are not judged on both jobs at once.
3. Assign a manager-mentor outside their reporting line for fortnightly conversations.
4. Schedule a 90-day check-in with two questions for the team: is it clear what good work looks like, and do you get useful feedback?

Over to you

Think about the last person you promoted for being excellent at their old job. Did you change the job, or just the title? What would you do differently now?