Most businesses do not need a formal review to work out who their key people are.
They already know. It is the founder who still carries too many client relationships. The sales director who is known to every customer. The operations lead who keeps delivery moving. The technical specialist everyone waits for when something important goes wrong. In many SMEs, a large share of revenue, judgement and trust sits with a small number of people. That is common. It is also a risk. (Legal & General)
That risk tends to sit quietly in the background while the business is doing well. Then one serious event exposes it all at once. Research found that 59% of businesses believe they would stop trading within a year after the death or critical illness of a key individual. You do not need to take every insurer statistic at face value to see the point. Many firms are more dependent on a handful of people than they like to admit.
The real disruption is wider than replacing one person
The obvious cost is recruitment. The higher cost is everything around it.
When a key employee dies, revenue can weaken because relationships are personal. Projects can be slow because knowledge is concentrated in one person. Directors and department heads often step in to cover client meetings, delivery issues and staff decisions while they try to steady the business. That is a very normal behaviour in real companies. It also has a price. Time that should be going into planning, hiring, growth and commercial decisions gets pulled into day-to-day operations instead.
This is why key person risk is a financial issue and a strategic one, not just an HR issue. The business is not simply short of one employee. It can be short of confidence, capacity and direction at the same time.
What key person insurance actually does
At its simplest, key person insurance is a policy the business takes out on someone whose loss would materially harm the company. If there is a valid claim, the business receives a lump sum. The purpose is practical. It gives the company money at the point when pressure is highest. (Legal & General; Zurich)
That money can be used in several sensible ways. It can fund a fast recruitment search. It can pay for interim support. It can help protect cash flow while revenue settles. It can also help reassure important clients, lenders or suppliers that the business has the means to keep going. This is one of the reasons advisers treat it as a continuity tool rather than just an insurance product. (Zurich; Legal & General)
Just as important, it can stop senior people from being dragged too far into operational cover. That point gets missed. Without a financial buffer, directors tend to absorb the problem themselves. With one, they have a better chance of protecting senior time for strategy and decision-making while the business reorganises. That is often where the real commercial value sits. This last point is an inference from how the cover is intended to support continuity and replacement costs.
A simple comparison
| Issue | Without key person insurance | With key person insurance |
| Immediate cash position | The business relies on reserves, overdraft or reactive cuts | A valid claim can provide a lump sum to support working capital |
| Recruitment | Hiring may be delayed or rushed because cash is tight | The business can fund a faster search or bring in interim help |
| Client reassurance | Senior staff may need to steady accounts with limited backup | The company has more room to communicate and support continuity |
| Leadership time | Directors and heads of department often get pulled into operational work | More chance of keeping senior focus on planning and strategy |
| Recovery period | The business reacts under pressure | The business has a financial buffer while it adapts |
The trade-off owners should be honest about
Not every senior employee needs cover, and this should not be treated as a box-ticking exercise.
Premiums are a real cost. The tax treatment is not automatic either. HMRC says premiums may be allowable where the sole purpose is to meet a loss of trading income from losing the services of the key person, rather than to cover a capital loss. A related HMRC page also says this is a question of fact and depends on what the business was seeking to achieve by taking out the policy. (HMRC; HMRC)
So the better question is not whether every important employee should be insured. It is narrower than that. Whose loss would create immediate financial strain, disrupt client confidence or force senior leadership into months of reactive management? That is where the discussion becomes useful.
An example that shows the value properly
Take a growing software business with 25 staff. Its head of engineering is central to product architecture, oversees major client integrations and is the person the sales team brings into late-stage pitches when technical credibility matters.
If she dies unexpectedly, the problem is not just that the company needs to hire. Client implementations could slow down. Existing customers may worry about support. The managing director may end up spending large parts of the week in operational reviews rather than focusing on hiring, sales and planning. Recruitment will be urgent, which usually means higher cost and more risk of making the wrong hire.
With key person insurance in place, the company receives a lump sum after a valid claim. That gives it options. It can hire an interim specialist, protect cash flow while projects stabilise, and run a proper search for a permanent replacement instead of taking the first credible CV available. The disruption is still serious, but it is less likely to become a wider business crisis.
Why does this usually get harder as the business grows?
The awkward truth is that key person risk often grows quietly alongside the business.
As firms become more complex, they take on larger clients, more systems and more compliance pressure. But decision-making authority, technical knowledge and relationship ownership do not always spread at the same pace. So the company can look stronger from the outside while remaining fragile in one or two critical places. The GOV.UK continuity guidance is useful here because it frames resilience in very practical terms: identify what you cannot afford to lose and plan how to maintain it.
A useful takeaway
A sensible starting point is not a quote. It is a plain internal review.
Work out which individuals carry disproportionate responsibility for revenue, delivery, compliance or client retention. Estimate what their loss would actually cost over six to twelve months, including delayed work, weaker sales, management distraction and pressure on cash. Once that is clear, the insurance discussion becomes much more grounded.
At that point, key person insurance stops being an abstract product and becomes what it really is: one practical way to protect the business against a risk it already knows it has.
