From Top Performer to First-Time Leader: A Starter Guide
Let’s revisit one of my earlier posts and discuss what is sometimes called “The Accidental Manager” . The standard corporate promotion playbook goes like this: an engineer ships flawless code, an account executive smashes their quota, or an operations specialist fixes a complex workflow. To reward their performance, leadership promotes them to team lead or manager.
Then, chaos ensues. Projects stall, communication breaks down, and the newly promoted lead begins drowning in calendar invites and 1:1s they don't know how to run. The team finds themselves either given no direction, or micromanaged, and never get the leadership they need.
Too often this is placed as an individual failure, but the truth is, it’s an avoidable mistake that most organizations put themselves into.
The Data Behind the Accidental Manager
When organizations promote top technical performers without teaching them how to lead people, they create accidental managers. Accidental managers:
Often times, that high performing IC is taking on a whole new job when becoming a manager. Their success depends heavily on your proactive planning.
Get no management training: 82% of managers enter leadership with no formal training. Research by the Chartered Management Institute (CMI) reveals that more than 8 out of 10 managers in organizations receive zero structured management or leadership enablement prior to taking on direct reports. In fact, at a conference over a decade ago, I remember a distinct discussion around the fact that most people become managers well before they get their first leadership training is almost 9 years!
Managers control team engagement variance: Gallup’s workplace studies show that direct managers account for up to 70% of the variance in employee engagement scores across business units.
The turnover cost is immediate: CMI data demonstrates that 50% of employees who rate their manager as ineffective plan to leave within 12 months—compared to just 21% under effective leaders.
When an accidental manager struggles, the organization loses twice: it loses the output of its top individual contributor, and it risks losing the rest of the team due to poor leadership.
Now, think for a minute about who these junior managers typically lead… usually junior employees, probably new to the workforce. In other words, these managers become the examples that future managers see as “leaders”. So, by just thrusting rock star individual contributors (IC) into manager roles without any preparation, you aren’t just setting them up to fail, you are setting up a vicious cycle that will continue to cost your business.
Shifting Output to Multiplied Output
The core reason technical stars struggle in management is simple: management is a career change, not a promotion.
As an IC, your value comes from direct output—what you write, build, analyze, sell, or deliver. As a manager, your value comes from multiplied output—how effectively your team writes, builds, analyzes, sells, or delivers.
When things get stressful, many untrained managers default to what made them successful as ICs. They jump in, take over tasks, micromanage, or solve problems for their direct reports rather than coaching them through execution. Others take the opposite approach, the sink-or-swim approach, letting their employees figure it out and simply tell them when they miss. They have yet to become adaptive leaders.
A Practical 30-60-90 Day Enablement Framework
Turning technical experts into capable people leaders doesn't require months of abstract leadership theory or multi-day retreats. While topics like servant leadership might be helpful, this is more of a long-term values development rather than a practical and tactical “how to get started” one, which is really what the accidental manager needs. You can best support your new managers by providing a predictable, lightweight development framework focused on operational execution.
Here’s a simply example:
Days 1–30: Establishing Cadence & Active Listening
Shift from "Doing" to "Leading": The new manager's primary goal in month one is mapping their team's working styles, ongoing risks, and existing bottlenecks.
Build a Predictable 1:1 Rhythm: Establish weekly or bi-weekly 1:1s focused on roadblock removal, priority alignment, and clear communication—not status updates (which belong in project tools).
Feedback Basics: Train managers to deliver actionable, real-time feedback using concrete behaviors rather than subjective personality evaluations.
A low-friction starting point to set new managers up for success is a 90-day onboarding plan focused on getting your high-performing ICs to start performing like managers.
Days 31–60: Applying Situational Leadership
Assess Task-Specific Readiness: One of the most dangerous traps for new managers is treating every team member the same—either micromanaging everyone or abandoning them entirely under the banner of "trust."
Match Style to Need: Teach managers how to apply Situational Leadership. I call it Adaptive Leadership, because I think that conveys the desired behavior a bit better, but ultimately the goal is the same. A senior team member might need high autonomy on core tasks, but require direct instruction and coaching when taking on an unfamiliar responsibility.
Days 61–90: Calibration, Delegation & Capacity Planning
Master Delegation: Transition the manager from assigning tasks to delegating ownership over outcomes.
Quarterly Talent Check-ins: Teach managers how to evaluate team capacity, identify emerging skill gaps, and run light quarterly check-ins to keep performance aligned with operational goals.
Setting Them - and You -Up for Future Success
Building better managers is ultimately about operational leverage. When you give high-performing individual contributors the concrete tools, frameworks, and feedback loops they need to lead, you don't just protect team retention—you build an engine for sustainable scale.
For a deeper conversation on the scale of this problem and practical ways organizations can address it, check out Ann Francke on Fixes for Accidental Managers. This video offers valuable context from the CEO of the Chartered Management Institute on how untrained line managers directly impact business results and employee well-being.
