What a New Chief of Staff Needs From You in the First 90 Days
A Chief of Staff's authority is borrowed from the founder. In the first 90 days, how much they can borrow is mostly up to you. Here's what to hand over, month by month, so your new Chief of Staff is running things by day 90, and what the first 90 days look like from their side.
Hiring a Chief of Staff is a big decision for a founder. You've found someone sharp, someone who sees around corners, someone you trust to carry part of your load.
Then they start, and the next 90 days decide how much of that load they can actually carry.
Here's why. A Chief of Staff doesn't get authority from the org chart. They get it from you. People follow their calls because they know the Chief of Staff speaks for the founder. If nobody is sure what that covers, they'll wait to hear it from you directly, and your new hire spends their first quarter asking permission.
I've been on the receiving end of this, as a Chief of Staff and as a COO. The difference between a fast start and a slow one was almost never the person. It was what the founder handed over in the first few weeks.
So here's what to hand over.
Days 1 to 30: Access, and a clear announcement
The first month is for learning how the company really runs. Your Chief of Staff can only do that with the same view you have.
1. Give them the whole view.
Put them in the leadership meetings, the board prep, the hard conversations. Give them access to the numbers, the systems, the shared drives. Walk them through the decisions on your plate right now and the ones you've been putting off.
It can feel like a lot of trust to extend to someone new. It is. That's the job you hired them for. A Chief of Staff with half the picture gives you half the value.
2. Tell the team what they own.
Don't let people guess. In your next leadership meeting, say it plainly: what your Chief of Staff is responsible for, which decisions they can make without you, and that when they ask for something, it's coming from you.
This one announcement does more than any onboarding plan. Authority that isn't announced doesn't take hold.
3. Set a standing weekly hour.
Thirty to sixty minutes, same time every week, and it doesn't get moved. This is where they bring what they're seeing, and where you tell them what's on your mind before it shows up on your calendar.
The best Chiefs of Staff know what the founder is thinking a week ahead. That only happens if you're telling them.
Days 31 to 60: One thing that's theirs
By month two, your Chief of Staff will have found more problems than anyone can fix at once. Help them pick one.
4. Share your real top three.
Not the long list. The three things that matter most this quarter, and just as important, what you're willing to let slide. A Chief of Staff can protect your time only if they know what it's for.
5. Hand them one area to run.
Pick something that's been stuck. A process that keeps breaking, a project with no clear owner, a recurring meeting that never produces decisions. Give it to them with a clear result you want, then let them run it.
One visible early win does a lot. It shows the team the Chief of Staff can get things done, and it shows you how they work before you hand over anything bigger.
Days 61 to 90: Step back
This is the month founders find hardest, and it's the one that matters most.
6. Let them make the call.
When something lands in their area, let them decide. Resist the urge to review every choice. If you'd have done it a little differently but their way works, let it stand. Every time you quietly redo a decision, the team learns to come to you instead.
7. Make it safe to bring you the hard news.
By now your Chief of Staff knows things you don't. Some of it will be uncomfortable: a team that's struggling, a priority that isn't landing, a habit of yours that slows things down. Thank them for it. The founders who get the most out of a Chief of Staff are the ones who can hear a hard finding and say "good catch."
Side by side
| What your Chief of Staff is doing | What they need from you | |
|---|---|---|
| Days 1 to 30 | Learning how the company really runs | Full access, a public announcement of what they own, a protected weekly hour |
| Days 31 to 60 | Picking what to fix first | Your real top three, and one area to run |
| Days 61 to 90 | Making decisions in their area | Room to make the call, and a welcome for hard news |
| By day 90 | Running things without checking in on each step | Less of your time, not more |
How you'll know it's working
At day 90, look for three signs.
People bring questions to your Chief of Staff instead of you. Decisions in their area get made without landing on your desk. And your weekly hour has shifted from catching them up to them catching you up.
If you're seeing those, they're set up. If not, look back at the list above. Usually one piece of it, most often the announcement or the stepping back, didn't quite happen. It's easy to fix in month four.
If you're the new Chief of Staff
Founders aren't the only ones reading this. If you're the one stepping into the seat, here's what the first 90 days usually look like from your side.
Month one is mostly listening, and that's fine.
You'll be in every meeting and own very little. That can feel strange if you're used to delivering. Your job right now is to learn how decisions really get made, who people go to when something breaks, and what keeps your founder up at night. Write it down. That map becomes the most useful thing you have.
Month two is when you find your first win.
You'll see more problems than anyone could fix. Pick one your founder cares about, that you can finish, and that people will notice. One thing done well earns more trust than five things started.
Month three is when you start speaking for the founder.
This is the shift that makes the role. People start bringing things to you first. Make the calls inside what you've been given, and tell your founder what you decided instead of asking. If you're not sure where the line is, ask once, clearly, then work inside it.
And if some of what's in this article isn't happening yet, like the announcement or the weekly hour, ask for it. Most founders want to set their Chief of Staff up well. They just don't always know what you need. This list is a good place to start that conversation.
One more thing worth knowing
A strong Chief of Staff is often your next COO. The habits you build in these 90 days, giving them real ownership and backing their calls, are the same ones that grow them into that seat later. The first 90 days aren't only about getting them started. They set the ceiling on how far they can go with you.
If you're bringing on a Chief of Staff, or thinking about whether you need one yet, that's the work I do. Let's talk.
