GUIDE · NEW MANAGERS
Your first 90 days as a new manager: a week-by-week plan
Your first three months as a manager set how your team sees you for a long time. The temptation is to prove yourself fast: change things, fix problems, show you deserve the job. The managers who do best usually do the opposite at first. They listen, learn how things really work, and earn trust before they change much.
Here is a simple plan for days 1 to 90, the conversations that matter most, and the mistakes almost every new manager makes.
Days 1 to 30: listen and learn
- Hold a first one-on-one with everyone in your first two weeks. Ask what is going well, what gets in their way, and what they want from a manager.
- Meet your own boss to agree what success looks like at 30, 60 and 90 days, and how they like to be kept informed.
- Learn the work: sit in on the team’s meetings, read the last few months of updates, and ask how decisions get made.
- Change as little as possible. Note what you would change, and why, for later.
- If you were promoted from within the team, say the awkward thing early: “This is new for all of us. I want to keep what works and I’ll need your help.”
Days 31 to 60: set direction and get quick wins
- Share what you heard: the themes from your one-on-ones, without naming who said what.
- Fix one or two small things people complained about. Removing an irritating blocker builds more trust than a big plan.
- Agree team priorities with your boss and make them visible, so the team knows what to say no to.
- Settle a rhythm: weekly one-on-ones, a short team meeting, and a clear way to raise problems.
- Start giving small, specific feedback, positive and constructive, so it becomes normal.
Days 61 to 90: build the team’s habits
- Delegate a real piece of work you used to do, with the why and the outcome, not step-by-step instructions.
- Talk to each person about growth: what they want to get better at, and one thing you will do to help.
- Address any performance issue you have been putting off. It gets harder the longer you wait.
- Ask the team for feedback on you: “What should I keep doing, and what should I change?”
- Review with your boss: what you have learned, what has changed, and your plan for the next quarter.
Mistakes almost every new manager makes
- Still doing your old job. Your value is now in what the team gets done, not what you do yourself.
- Changing too much in the first month, before you understand why things are the way they are.
- Avoiding difficult conversations to stay liked.
- Treating one-on-ones as status updates instead of time for the other person.
- Saying yes to every request from above and passing the overload to the team.
Questions for your first one-on-ones
What do you enjoy most about your work here, and what drains you?
What is one thing that gets in your way that I might be able to fix?
How do you like to receive feedback?
What did your last manager do that you’d like me to keep doing? Anything you’d rather I didn’t?
What should I know about the team that won’t be in any document?
Free tools for this
Frequently asked questions
What should a new manager do in the first 90 days?
Spend the first month listening: one-on-ones with everyone and a clear agreement with your boss on success. In the second month, share what you heard, fix a couple of small problems and set priorities. In the third, delegate, talk about growth and ask for feedback on yourself.
What is a 30-60-90 day plan for a new manager?
A simple plan split into three stages: learn (days 1–30), set direction and get quick wins (31–60), and build the team’s habits (61–90). Agree it with your own manager at the start.
What is the biggest mistake new managers make?
Carrying on doing their old job instead of helping the team succeed, closely followed by changing too much before they understand how things work.
How do you manage people who used to be your peers?
Acknowledge the change openly, have a one-on-one with each person early, be consistent and fair, and don’t try to stay “one of the gang” by avoiding hard decisions.
One-minute lessons on this
TOPIC 02The first mistake every new manager makes
TOPIC 18How to manage someone who used to be your peer
TOPIC 53Promoted over your friends? Say the awkward thing first
TOPIC 09Why one-to-ones focused on updates do not build trust
TOPIC 01Why hard work alone won’t get you promoted
TOPIC 37When every decision has to go through you
More guides
- Stay interview questions: find out why people stay before they leave
- How to manage people who used to be your peers (and friends)
- Your first team meeting as a new manager: agenda and what to say
- How to delegate as a manager without losing quality (or sleep)
- Difficult conversations with employees: a simple structure and example scripts
- How to organize and run a team meeting people don’t dread
- How to handle conflict between two employees
- What to do when an employee keeps missing deadlines
- Remote team check-ins: how to stay close without micromanaging
- What to say when an employee resigns (and what to do next)
- Constructive feedback examples: what to say, and how to say it
- How to say no to your boss without damaging the relationship
- Employee recognition examples that people actually remember
- How to deliver bad news to your team (with example wording)
- Year-end performance reviews: a 6-week checklist for managers