The first 100 days for Leaders and Managers are pivotal.

The first 100-days - why Coaching new‑to‑role Leaders delivers disproportionate impact

When a manager or leader steps into a new role, either promoted internally, hired from outside or taking over a new team or project, the first 100 days can be the most fragile, high risk, high opportunity period of their leadership journey. It’s the moment where expectations, hopes and fears collide with reality, where culture reveals itself and where relationships either flourish or stall.

And yet despite the commercial sensitivity of this transition, most organisations still treat it as a ‘sink or swim’ moment. Here’s some data for your consideration:

• 58% of new managers and leaders receive no management training at all.

• Only 12% of employees strongly agree their organisation onboards new hires well, and this is including new leaders.

• 77% of new managers report feeling overwhelmed in their first 90 days.

• 40–50% of new leaders fail within 18 months.

• 
  

This strongly suggests there’s a support issue here, that is likely to compound leaders and managers with low capability, changes, feeling out of their depth etc. It’s a support issue that needs attention for the good of the managers, leaders, their teams, projects and the business.

Why the First 100 days matter more than you might appreciate

The first 100 days are not simply an onboarding period, it’s a crucial time for leaders (or managers) and their team. Its a window where leaders either build trust, clarity, momentum… or sadly sow confusion, misalignment, fear and disengagement.

Research shows:

• Leaders account for 70% of the variance in team engagement.

• Teams with effective managers are 13% more likely to be engaged.

• Leadership development drives 21% higher profitability and 17% revenue growth.

When a leader gets the first 100 days right, everything downstream tends to become easier inc performance, collaboration, retention, delivery and understanding and shaping culture.

When they get it wrong, the costs compound quickly and sometimes irreversibly for that leader.

The hidden costs of poor Leadership transitions

Leadership failure is expensive and often far more expensive than most organisations want to realise.

Across multiple studies (Gallup, CCL, HBR), the combined cost of a failed manager can reach 20–40× their salary when you factor in:

• Lost productivity

• Team disengagement

• Turnover triggered by poor leadership

• Project delays and rework

• Cultural damage

• Replacement and retraining costs

For a leader earning £80–£200k, this becomes a £$£$£multi‑million problem. And the root cause is almost always the same, it was predictable, that the leader wasn’t supported early and well enough.

Why new Leaders struggle (even the good ones)

Even talented leaders can hit turbulence, unexpected hurdles, friction, team conflict, under performance and many others when entering a new role. A number of the challenges are predictable and preventable or reducible:

• Identity shift - moving from contributor or team member to leader is one of the hardest transitions for employees,  60% cite it as their most challenging career shift.

• Inherited team dynamics - legacy issues, unspoken norms, unmet needs, unresolved conflict, low performance or undervalued staff can derail early momentum for leaders.

• Unclear expectations - 47% of new hires say they are unclear on role expectations in the first month.

• Pressure to deliver immediately - leaders try and act fast before they understand the culture or politics, in order to look good or achieve a result, this can be counter productive

• Lack of support  - only 32% of companies have a formal onboarding programme, and its questionable how tailored or helpful it is, eg context, timing etc.

This is why coaching during the first 100 days can deliver disproportionate impact.

The Science: coaching works especially well for new‑to‑role Leaders

Recent meta analyses (2023) show that coaching produces statistically significant improvements in:

• Leader behaviour

• Self‑efficacy (your belief in your own ability to succeed in a specific situation or accomplish a particular task)

• Goal directed and focussed action

• Adoption of complex leadership skills (eg adaptive leadership)

• Resilience and reduces burnout

Coaching helps leaders to:

• Think more strategically

• Make better decisions

• Build stronger relationships

• Communicate more effectively

• Reduce conflict

• Increase team engagement

• Set clearer expectations

• Navigate politics and culture

• Accelerate performance

This scientifically proven, and makes great commercial, culture and business sense. In fact it makes great sense for all those involved from staff and stakeholders, to clients and suppliers.

My 100‑Day Coaching Programme will accelerate Leadership Impact

I designed this 100‑Day Coaching Programme specifically for:

• New‑to‑role managers and leaders

• First‑time leaders and managers

• Leaders taking over a new team or project

• Leaders recruited into the business

• Managers stepping into a new project or function

The programme helps leaders in many ways, including:

• Connect faster with their team and stakeholders

• Build trust and credibility early

• Understand expectations eg what’s said, unsaid and assumed

• Assess whether the role matches what they were sold

• Identify gaps in support, resources and sponsorship

• Navigate culture and politics

• Think more strategically

• Reduce early mistakes, delays and misalignment

• Accelerate performance and confidence

This 100-day accelerator coaching programme gives leaders a thinking partner, supporter, coach, consultant and someone who helps them see more, think better and act with more clarity and confidence.

The Commercial Case is incontrovertible

The first 100 days are the most fragile period, coaching during this window can deliver disproportionate impact.

It prevents early derailment, it accelerates trust, reduces risk and it increases performance. Therefore it strengthens or benefits the culture, saves money and builds leaders who can access and multiply value rather than overlooking or draining it.

This 100‑Day Coaching Programme is scientifically and commercially justified.

Closing

You wouldn’t launch a product without a plan, so why launch a leader without support?