What to Do in Your First 90 Days as a New Manager

Why do the first 90 days matter so much for a new manager?

Because the manager is the largest single influence on how a team feels about its work, and because most new managers start without training. Gallup estimates that managers account for at least 70% of the variance in employee engagement scores across business units. In the UK, a 2023 study by the Chartered Management Institute with YouGov found that 82% of people who enter management positions have had no formal management or leadership training.

The pressure on managers is also rising. Gallup's State of the Global Workplace report puts global employee engagement at 20% in 2025, and manager engagement at 22%, down from 31% in 2022. The same report observes that few managers have natural management talent and many have not received the training they need to coach teams.

The first quarter is when a team decides what kind of manager you are. People watch what happens to the first person who brings you bad news, whether you keep the first date you give, and whether you change things before you understand them. Those early impressions are slow to shift, which is why it pays to plan the quarter instead of improvising it.

What should you do before your first day?

Hold two conversations. The first is a handover with your predecessor, or, if they have left, with your manager and the longest-serving team member. Cover five areas: the people (including anything formal in progress and any verbal promises), work in flight, commitments to customers and other teams, money and access, and the question "What would you worry about if you were staying?" If you inherit anything formal, such as an improvement plan, ask HR for the written record.

The second conversation is with your own manager, and it is the most valuable hour of the quarter. Ask how they read the team today (what is going well and what worries them), which results they expect by day 90, what you may decide alone, how they want to hear bad news, and when you will review progress. A useful question is: "If it is day 90 and you are pleased, what happened?" Write up what you heard and send it the same day for corrections. A corrected draft is an agreement.

• Results expected by day 90: no more than three, each with a measure
• Decision rights: what you decide alone, what you decide and report, what needs approval
• Working together: a weekly slot, and how early they want bad news
• Review dates for day 30, 60 and 90 in both calendars

What should a new manager do in the first week?

In week one the team is not waiting for your vision. They want to know three things: will you change everything, will you be fair, and are you still a normal person. Answer through what you do.

Send a short written note on the first morning saying you are glad to be there, that you will listen first, that you are not planning sudden changes, and when you will meet each person. Hold a first team meeting of about 40 minutes: a short hello, what you know and do not know, how the first 30 days will run, their questions, and a practical close. When you ask for questions, wait. If nobody speaks, answer the ones they are likely thinking, such as whether roles are changing. "I don't know yet, and I'll tell you by the end of the month" is a good answer.

Share a one-page note on how you work: when you are reachable, how to bring you a problem, how you give feedback, and what you are known to be bad at. Then fill the diary with a first one-to-one for every team member inside ten working days. On shifts or a shop floor, twenty minutes walking together works, as long as everyone gets a turn and the same questions.

What does a 30-60-90 day plan for a new manager look like?

A workable plan has a preparation stage and three 30-day stages, each with a different job. The table below is a summary you can adapt. It follows the Listen, Line Up, Land method used in the Bodhih Training kit First 90 Days as a Manager, which adds dated weekly actions, forms and scripts to each row.

What questions should you ask on a listening tour?

Ask everyone the same questions, in the same order, and write the answers down the same way. Otherwise you end the month with impressions instead of evidence. Five questions are enough.

The first question matters most. It signals that you are not arriving to tear things down, and it produces a list of things to protect. Promise nothing in the room except that you will report back what you heard. After each conversation, tag it with one or two themes, such as unclear priorities, workload or handoffs with other teams, and count the tags at the end of the month. The count often disagrees with what you assumed.

How you react matters as much as what you ask. Google's Project Aristotle research studied 180 of its teams and found that psychological safety, the shared belief that the team is safe for interpersonal risk taking, was the most important of five dynamics separating effective teams from the rest. A new manager builds or damages that belief in every early conversation.

• What is working well here that I should be careful not to break?
• What gets in the way of you doing your best work?
• If you were in my seat, what is the first thing you would look at?
• What do you need from me, and what do you hope I will not do?
• Who else should I talk to, and what should I ask them?

What should you change straight away, and what should wait?

Use three questions. Is it causing harm today, to a customer, to someone's safety or wellbeing, or to compliance? Is the fix small or easy to undo? Have the people affected been asked? If all three answers are yes, change it now. A missing system login, a broken rota and a report nobody reads all qualify.

If it matters but is hard to undo, touches another team, or you have heard only one side, wait until the second month. Team structure, roles and targets belong there. And if it is a matter of taste, such as a template or the name of a meeting, leave it alone this quarter. Each change spends some of the team's goodwill, and leaving harmless things alone saves it for the changes that count.

Safety, legal and compliance problems are the exception to patience: act the same day and tell your manager. For anything involving contracts, pay, formal warnings or dismissal, check with your HR team, company policy and local law first, because the rules differ by country and employer.

How do you manage former peers after a promotion?

Say it out loud, early. In the first week, hold a short conversation with each former peer that names what stays the same (respect for their work, straight talk) and what changes (you will make some decisions they used to share, give them feedback, and know things you cannot pass on). Then ask what they would like you to keep in mind.

Three rules follow. Treat friends on the team exactly as you treat everyone else on work, leave and information. Stop joining complaints about management, because you are now part of it. Take your own venting to your manager, a mentor or a peer in another team.

If a colleague applied for your job, speak to them privately and early. Acknowledge that the outcome was hard, do not apologise for a decision that was not yours, and do not promise the next promotion. Ask what they want from the next year and give them real, visible responsibility as soon as you honestly can. If you want a baseline for this particular challenge, the AssessAll assessment Leading Former Peers measures it.

How do you choose an early win?

An early win is a small, real improvement the team delivers together inside the quarter and that people outside the team can see. Score each candidate from 1 to 5 on five tests: is it visible to the people who matter, does it fix a pain the team raised in their own words, can it be done in about six weeks with existing people and budget, is the damage small if it goes wrong, and does it need several of the team so that the result is theirs?

Take your top two to your manager and ask which they would rather see. Then halve the scope: new customers instead of all customers, one site instead of five. A small thing finished by day 80 is worth more than a large thing reported as progressing well on day 90. Write the win as one sentence with a before, an after, a date and the name of the person leading it, and make sure that person is not you.

What are the most common mistakes in a new manager's first 90 days?

Most are sensible actions taken in the wrong order. The pattern to hold on to is: ask before you fix, agree before you announce, and let the team carry the result.

When a performance concern does come up, describe it with the Situation, Behaviour, Impact structure from the Center for Creative Leadership: when and where it happened, what you observed without judging the person, and the effect it had. Then ask for their view before you form yours. For development goals later in the quarter, a guide such as Jobulary's 'A development plan that survives week six' helps turn a single goal into a plan people keep using.

• Fixing before listening: changing things in week one that nobody asked for
• Guessing what your manager wants instead of agreeing it in writing
• Still doing your old job: redoing the team's work because yours is better
• Staying one of the gang, or overcorrecting into a stranger
• Importing answers from your last company before understanding this one
• Listing seven priorities, which means having none
• Choosing a first project too large to finish in the quarter
• Avoiding the first hard conversation and hoping it resolves itself
• Spending all your attention on a struggler while a strong performer quietly looks elsewhere
• Running without thinking time, and cancelling one-to-ones when busy