A sudden leadership exit is rare, but the damage is real when it lands. A continuity plan is the short, separate document that keeps the business steady, and you can build one in a quiet quarter, long before anyone gives notice.
Succession planning often works on a timeline of years, with candidates carefully chosen and groomed to become leaders in the future. But what happens when one of your current senior leaders leaves abruptly?
It happens more than most leaders expect. In 2025, CEO exits at public companies hit an all-time record of 446, up from 373 the year before. This can have a huge impact on existing succession plans, especially if it results in a shakeup of other C-Suite positions.
Of course, it's not easy to prepare for the unexpected. That's what a continuity plan is for: a short, separate plan that keeps the business steady when a senior leader leaves without warning.
Why a sudden departure needs its own plan
Most succession plans are built for a planned handover. You can see the retirement coming, you spend a year or two preparing the successor, and the move happens on a schedule everyone knows. A sudden departure takes away the one thing that kind of plan relies on, which is time.
So a sudden exit is really a continuity problem. It belongs in the same category as your disaster recovery or business continuity planning: a low-probability event that would do real damage, and one you prepare for precisely because you can't predict when it lands. The long-term pipeline still matters. Your continuity plan sits alongside it.
And like any such plan, the work is modest set against what it protects. You can put it together in a quiet quarter, long before anyone gives notice.
How to build your continuity plan
Preparing for a sudden departure is more manageable than most leaders expect. It comes down to five steps, and you can work through them over a single quarter without disrupting the business. Each is a decision you make deliberately now, so no one has to make it under pressure later.
1. Assess the impact of a sudden departure in each key role
Start by working through your senior roles one at a time, asking not just what would stall if that person were gone tomorrow, but how soon. What has to keep moving from day one, what can hold for three to six months, and what can wait until a permanent replacement is in place? For a few roles the honest answer is that little would slip, and those don't need a dedicated plan. But the same question surfaces the quiet ones too: roles with no obvious day-one impact that still carry real risk if the work simply stops.
This exercise does two things. It shows you where to concentrate your effort, and it surfaces what each leader actually carries, from the decisions only they sign off to the relationships only they hold. In most companies, two or three roles account for the bulk of the risk, and those are the ones to plan for first.
2. Decide who steps in, and for how long
For each role that matters, decide who takes it on. Often that's one person: a first choice to step in, with a named second in case the first isn't available, since your first pick could even be the colleague who just left. Sometimes it works better to split the role, handing its separate functions to two or three people who already do related work, using the map you built in step one.
Whoever steps in, treat the arrangement as temporary. In the first days after a sudden exit you often won't know whether the person is gone for good or back within a month, so the goal is simply to keep the role steady and give yourself time to make the permanent decision well. A capable peer or direct report who already knows the work can usually hold things for a few weeks. When no one inside is ready, though, or the role carries work that can't wait, an interim or fractional leader can hold it instead. That adds cost up front, but it keeps the business moving while you take the time to decide well.
3. Set the authority each successor will hold
A successor can only act if they know what they're authorized to do. Set this out in advance: what they can approve, how much they can commit, and which decisions should wait for you or the board.
Frame it as a clear set of permissions. A line such as "the acting head may approve payments up to $50,000 and sign standard client contracts" leaves no room for hesitation. Without that clarity, even a capable stand-in spends the first week seeking approval for routine matters, and momentum slows while the business waits.
4. Work with the incumbent to develop a handover plan
The person currently in the role is your best source for everything a plan can't anticipate. Sit down with them and capture what would otherwise leave with them: the priorities and open items they're carrying this year, the relationships they hold, and the decision-making frameworks they keep in their head, the kind of institutional knowledge no job description captures. Note the systems and accounts only they can access, too.
Keep it practical. A short handover note that stays current is worth more than a detailed manual no one maintains. And do this while the working relationship is strong, well before any notice is given, because a handover prepared in a settled month is far more complete than one assembled during someone's final weeks.
5. Keep the plan current and reachable
A plan is only useful if it's current and easy to find. Give it an owner, usually you or your senior HR leader, responsible for keeping it up to date as people and roles change. A plan that names a successor who left a year ago offers false reassurance, which is worse than having no plan at all.
Store it somewhere the right people can reach without the departing leader, and schedule a short review once or twice a year, and whenever someone in a key role moves on. A brief check on a regular cadence is enough to keep the plan reliable.
Build the plan while you have time
A continuity plan is a small piece of work that buys a large amount of stability. It works alongside your long-term succession planning, not instead of it. A few focused sessions now keep a sudden departure from turning into a crisis, and your team and your clients stay steady while you work out what comes next.
If you'd like a hand putting one together, this is where Helios can help.
- Strategic HR, for organizations that want succession and workforce planning built into how they operate, before a gap forces the question.
- Interim and fractional HR leadership, for organizations that need an experienced pair of hands in a key seat while they settle the permanent answer.
- Leadership development and onboarding, for organizations that want to grow the bench and set new leaders up to succeed from their first week.
- HR consulting, for organizations that want a partner to shape the wider people strategy around all of this.
Ready to draft your continuity plan before you need it? Talk with the Helios team.
Frequently asked questions
What is a continuity plan for leadership?
A continuity plan is a short, standing document that keeps the business steady if a senior leader leaves without warning. It names who steps in, sets their authority, and captures the knowledge that would otherwise walk out the door.
How is a continuity plan different from succession planning?
Succession planning grooms future leaders over years for a planned handover. A continuity plan prepares for a sudden, unplanned exit, when there's no time to prepare a successor. The two work together, not instead of each other.
Who should step in when a leader leaves suddenly?
Usually a capable peer or direct report who already knows the work, with a named second in case the first choice is unavailable. When no one inside is ready, an interim or fractional leader can hold the role.
How often should you update a continuity plan?
Review it once or twice a year, and whenever someone in a key role moves on. Give it an owner, usually you or your senior HR leader, so it stays current. An out-of-date plan offers false reassurance.
What authority should an acting leader have?
Decide in advance what they can approve, how much they can commit, and which decisions wait for you or the board. Clear permissions, such as a spending limit, let a stand-in act without stalling for approval.
How long does it take to build a continuity plan?
For most mid-market companies, a few focused sessions over a single quarter. You work through your key roles, decide who steps in, set their authority, and capture a handover note, all before anyone gives notice.
Related resources
- Modernize Succession Planning (SHRM)
- How to Onboard a New Member of the Executive Team (Harvard Business Review)
- A New View on Emergency Succession (Korn Ferry)