The First 90 Days by Michael Watkins: Summary and What the Research Says

What the book is

The First 90 Days is a book by Michael D. Watkins about taking charge in a new role. Harvard Business School Press published the first edition in Boston in 2003, under the subtitle Critical Success Strategies for New Leaders at All Levels; a library catalog lists 253 numbered pages plus front matter (Watkins, 2003). Harvard Business Review Press published an updated and expanded edition in 2013, with the subtitle Proven Strategies for Getting Up to Speed Faster and Smarter and 278 numbered pages (Watkins, 2013). The catalog record describes it as a 10th anniversary edition that adds a new preface on careers as a series of transitions, updated statistics and new tools. A bookstore listing shows a further "newly revised and updated" edition, 320 pages, scheduled for February 2, 2027 (Watkins, 2027); I have not seen that edition.

Watkins is Professor of Leadership and Organizational Change at IMD, which he joined in 2007. Before that, his IMD profile says, he taught at INSEAD and was an associate professor at Harvard Business School and the Kennedy School of Government (IMD, n.d.). The same profile says the book has sold more than 1.5 million copies and been translated into 23 languages. That is the school's own figure, and I have not found an independent count. The 2013 edition's own preface gave almost 800,000 copies sold in English and translations into 27 languages at that point (Watkins, 2013), so the language counts do not match.

The advice, in plain words

The first edition is organized around ten chapters, and the titles give the shape of the advice: promote yourself, accelerate your learning, match strategy to situation, secure early wins, negotiate success, achieve alignment, build your team, create coalitions, keep your balance, and expedite everyone (Watkins, 2003). A reviewer called them the book's ten vital actions, each ending with a short checklist (Baumgarten, 2004). The 2013 edition renames and reorders several chapters: it opens with Prepare Yourself, puts Negotiate Success before Secure Early Wins, and closes with Manage Yourself and Accelerate Everyone (Watkins, 2013).

The central idea, in an excerpt and interview Harvard Business School published in 2003, is that new leaders are most exposed early on (Lagace, 2003). They do not yet know the details of their challenges, and they have not built the relationships that would support them. Early impressions tend to stick. The goal is to reach what Watkins calls the break-even point sooner. IMD's page for the 2013 edition describes that point as the moment when the organization needs the new leader as much as the leader needs the job (IMD, 2013). The book itself defines it as the point at which a new leader has contributed as much value to the organization as they have consumed from it (Watkins, 2013). The excerpt says well-chosen early wins get a leader there faster.

Two tools carry most of the weight. The first is diagnosing the situation. The excerpt describes four kinds of business situation a leader can walk into: a start-up, a turnaround, a realignment of a unit drifting toward trouble, and sustaining an organization that is already succeeding. The 2013 edition lists five, adding accelerated growth to the four in the excerpt, and calls the set the STARS model (Watkins, 2013). In a start-up or turnaround, the hard calls come early. In a realignment, much of the work is convincing people who look successful that problems exist. In sustaining success, a leader has to earn trust before changing direction.

The second tool is early wins. The excerpt describes the first 30 days as mostly about building credibility, and the following 60 as the time for targeted improvements (Lagace, 2003). Early wins are supposed to serve the leader's longer-term priorities, not just look good. Among the traps the excerpt lists are trying to do too much, ignoring what the culture counts as a win, and neglecting what matters to the boss.

If you want the shortest possible summary of The First 90 Days, it is this: learn fast, diagnose before you act, pick a few early wins that point where you are going, and build the relationships you will need later.

Why it became so widely read

Watkins writes that The Economist called it "the onboarding bible" in 2006 (Watkins, 2013), and IMD repeats the label (IMD, n.d.). The publisher's description of the 2013 edition pitches it to first-time managers, mid-career professionals and new CEOs alike (Watkins, 2013). I could not find a reliable source on how widely employers use it in onboarding programs, so I leave that alone.

My view is that it spread because it answers a question most professionals face several times in a career with a plan rather than a pep talk: a calendar, situations to diagnose, and checklists a new leader can act on the same week.

What it offers a first-time manager versus a senior leader

The book addresses leaders at all levels, but much of its machinery is built for people who run a unit. Watkins says the situation model applies at any level, down to a first-line supervisor (Watkins, 2013), but its examples, as this review reads them, are mostly framed around business units. The business situations are choices about a unit's strategy, and the HBS excerpt draws on John Gabarro's study of general managers taking charge (Lagace, 2003). That fits a senior leader, who really does need to know whether she has inherited a turnaround or a success to sustain.

A first-time manager's situation is different. They usually do not set the unit's strategy, and they are often promoted from among the people they now manage. The hardest part may be the switch from doing the work to getting it done through others. The 2013 edition does take this up: its first chapter covers the challenges of promotion, the first trap it lists is sticking with what you know, and a section of a later chapter covers leading former peers (Watkins, 2013). In my view, though, the situation and early-win tools are not built around it. A middle manager sits in between. She has to diagnose her own team's situation while working inside a strategy someone above her chose, and her early wins have to make sense both to her boss and to the people closest to the work.

In my view, the book is still useful at every level, but a first-time or middle manager should read the situation and early-win chapters at the scale of a team, not a business. For more on that layer of the organization, see the middle managers page.

The main criticisms

The first criticism is about evidence. Jason Baumgarten's 2004 review in Stanford Social Innovation Review found the prose smooth and the recommendations helpful, but said the book "lacks specific connection to research," with citations rare enough that the source of many suggestions is unclear (Baumgarten, 2004). The 2003 excerpt cites Gabarro's study and the author's own observations, and no survey statistics (Lagace, 2003). The 2013 edition adds statistics, but they come mainly from the author's own surveys, including an unpublished 2011 survey of 580 leaders run by his firm with Harvard Business Review and IMD. Its claim that independent research shows the book's principles can cut time to break-even by as much as 40 percent traces, in its notes, to two client companies' self-reported estimates: coached executives at one reported an average 40 percent improvement in performance, and program participants at the other reported an average 1.2-month cut in time to break-even (Watkins, 2013).

The second is my own view. The book is written from the new leader's side of the transition. Its advice about coalitions and alignment treats other people mainly as stakeholders to win over. That is reasonable for a book about taking charge. Watkins does suggest using the same ideas to help your own new direct reports get up to speed, and the last chapter is about speeding up everyone's transitions, but in this review's reading the team's side of the leader's first 90 days gets far less space, which is where the research below has the most to add.

What the research says

None of the studies below tests Watkins's method directly. They test the ideas underneath it: that early learning and early relationships shape how a newcomer does, and that a new role can be a poor fit for the person promoted into it.

Early adjustment matters. Bauer, Bodner, Erdogan, Truxillo and Tucker (2007) combined 70 samples of newcomers in a meta-analysis. According to the abstract, they tested a model in which three kinds of adjustment, role clarity, self-efficacy and social acceptance, carry the effects of an organization's socialization tactics and of newcomers' own information seeking on outcomes such as job satisfaction, commitment, performance, intentions to stay and turnover. The results generally supported the model. That fits the book's emphasis on learning fast and building relationships, though the abstract describes newcomers in general, not new leaders specifically.

The first 90 days really are a window. Kammeyer-Mueller, Wanberg, Rubenstein and Song (2013) followed 264 newcomers through 14 waves of surveys. According to the abstract, support from coworkers and supervisors declined within the first 90 days. Early support and undermining had more significant relationships with outcomes measured after 90 days than changes over that period did, which the authors read as early experience laying a foundation. Supervisor undermining was uniquely linked to a higher chance of leaving. For a new manager, that cuts in two directions. Your own first weeks matter, and so do the first weeks of every person who joins your team.

Promotion can be a mismatch. Benson, Li and Shue (2019) studied sales workers at 131 firms. According to the abstract, they found evidence consistent with the Peter Principle: firms weighted current sales performance in promotion decisions at the expense of other traits that better predicted performance as a manager, and the cost of promoting people with lower managerial potential was high. This is one study in one occupation. Watkins makes a similar point from the new leader's side, that the skills that earned a promotion may not be the ones the new level needs (Watkins, 2013). The study adds the employer's side: firms may be promoting the wrong people in the first place.

Senior tenures have seasons. In a theory paper rather than a test, Hambrick and Fukutomi (1991) proposed that a CEO's tenure moves through five phases, starting with a response to the mandate and ending in dysfunction. For senior leaders, it is a reminder that the first 90 days open a longer arc.

A balanced verdict

What the book is good for: giving a new leader a structure for a period that usually has none. Diagnosing the situation before acting, choosing a few early wins that point toward longer goals, and building relationships early are all consistent with what newcomer research reports.

Where it misleads: in places, it can make a transition look like a solo project, and its strategic tools fit a senior leader better than a first-time manager. The studies here suggest that early support matters for everyone new, including the team, and that promotion itself can put the wrong skills in the job.

The best use I can suggest is to read it, then make a second plan alongside your own: what each person on your team needs from you in the first 90 days, and what they already know about the work that you do not. For other books aimed at that level, see the best books for managers, and for change at a larger scale, see Leading Change. If you want a structure for that second plan, the free 90-day calendar and templates give one page per tool.