Your first hundred days
managing people.

Meet everyone properly, early

In your first two or three weeks, hold a real one-to-one with every person who reports to you. Not a fifteen-minute intro, an hour. Ask what they are working on, what is slowing them down, and what they would fix first if the choice were theirs. Then ask the question new managers forget: what should I know about how things actually get decided here.

If you were promoted from inside the team, the conversations are harder, because the old peer relationship is still in the room. Name it directly: our friendship does not entitle either of us to less honesty. People respect the manager who says that out loud far more than the one who pretends nothing changed.

Change less than you want to

The urge to fix everything in month one is real and mostly wrong. Every process you meet is serving somebody's interest, and until you know whose, you are editing in the dark. Your first hundred days need maybe one visible fix: the meeting nobody defends, the report nobody reads, the approval that adds three days and zero safety.

Pick one, kill it, and say why. One deliberate removal teaches your team more about you than five new initiatives. Then write down the other things you noticed and wait. Some of them will look different once you have seen a full quarter.

Build a rhythm people can predict

Teams judge a new manager on a small number of repeated behaviours: whether one-to-ones happen or get cancelled, whether decisions get explained or just announced, and whether feedback lands in private within days or in a review after months. Fix your cadence first.

• Weekly or fortnightly 1:1s that only get cancelled by the person who owns the problem.
• One written place where decisions land, so nothing important lives only in a hallway.
• Feedback within a few days, privately, about the work rather than the person.

Manage upward on purpose

Put one item in your plan that serves your own boss: agree with them what you will have learned by day 30, decided by day 60, and shown by day 100. That single alignment prevents the classic failure where a new manager's boss assumes progress and discovers the mismatch at review time. If your boss cannot answer what success looks like, that is a finding worth escalating while it is still cheap.

When you inherit a mess

Sometimes the team you inherit is genuinely broken: a previous manager who managed by fear, two people doing one job, a top performer quietly interviewing elsewhere. The plan still holds, but the emphasis shifts. Your listening conversations become triage, your one visible fix should be something that removes pain people feel daily, and your first honest one-to-one may need to start with an apology on behalf of the institution. What you cannot skip is the sequencing: even in a mess, the diagnosis week beats the rescue fantasy, and a rescue attempted in week two usually becomes a story the team tells about you for a year.

Day 100: say what you learned

Close the season by telling your team, briefly, what you learned and what changes now. Not a strategy offsite, a page. Then do the same with your boss. The managers who stall are usually the ones who treated day 100 as a survival milestone instead of a review point.

The full framework lives in the 100 day plan guide. If you lead managers who are new to their teams, the onboarding checklist may help you support them, and the CEO version covers the board-level version of the same discipline.