Here's a pattern I keep seeing when I place someone into a senior role: the offer gets signed, everyone's relieved, and then the real work — the part that actually decides whether this hire sticks — barely gets a conversation.
The first 90 days aren't a formality. They're the window where a new executive moves from "outsider with a fancy title" to someone people actually follow. Get it wrong, and no amount of experience on the CV saves you. McKinsey's research puts executive transitions regarded as outright failures or disappointments after two years at somewhere between 27% and 46% — and the Center for Creative Leadership's derailment research points to why: it's rarely a technical skills gap. It's relationships, judgement, and how the transition itself is handled.
Days 1–30: Listen before you lead
The instinct for a lot of new execs — especially ones brought in to "fix" something — is to start moving fast. Resist it. The first month should be a listening tour: direct reports, peers, the board, frontline people who actually know how things get done versus how the org chart says they get done. You're building a real picture of the business, not the version you got in interviews.
This is also when you clarify your mandate properly. Not "what did they say when they hired me" — what does success actually look like, to the people who'll judge it. Assumptions made here get expensive later.
Days 31–60: Assess and align
Now you're looking hard at the team — who's genuinely strong, where the gaps are, who's coasting on tenure. You're spotting the early wins that are both meaningful and achievable. And you're aligning your emerging strategy with leadership before you announce anything, not after.
This is also usually where culture becomes real rather than theoretical. Knowing what to adapt to and what to actually push back on is a judgement call — and it's one a lot of external hires get wrong in one direction or the other.
Days 61–90: Act, and be seen acting
Time to deliver something visible. Not a grand transformation — a credible early win that shows direction and builds momentum. You're also starting to set the operating rhythms — how decisions get made, how progress gets measured, who's accountable for what.
What doesn't fit neatly into a phase
A few things run underneath the whole 90 days, not confined to one stretch of it:
- Relationships with the CEO, board, and C-suite peers — misalignment here is one of the most common reasons good executives derail.
- The "fishbowl" effect — being constantly measured against your predecessor, fairly or not, while you're still finding your feet.
- Business context — market position, financial health, competitive risk — that you're expected to absorb fast, without the luxury of ramping up slowly.
Why I bring this up
Every time I place someone into an executive role, the placement isn't really the finish line — it's the start of the part that determines whether it was the right call. A strong 30/60/90 plan, built before day one and refined once they're in the seat, is one of the clearest signals I look for that a candidate is set up to succeed rather than just set up to start.
If you're stepping into a new executive role — or hiring for one — how deliberate is the first 90 days, really? Is there an actual plan, or is it being figured out as you go?
Sources: McKinsey & Company, "Successfully Transitioning to New Leadership Roles"; Center for Creative Leadership, "A Look at Derailment Today."