**Source:** https://heykiku.com/glossary/key-person-risk

# Key Person Risk

An account director quits in October. She held three of the agency's top five clients—not just the contracts, but the relationships, the unwritten process for how each account ran, and a decade of context about why things were done the way they were. The founder isn't worried at first; the work product is fine and the team is capable. Then, within sixty days, two of those three clients quietly reduce their retainers. The new contact is competent, but the clients say the same thing in different words: **"They don't really know us anymore."** One person's exit just put a measurable dent in revenue, and no replacement hire fixes it fast.

This is concentration risk, and it's specific to small agencies. At a 5-to-20-person shop, roles aren't cleanly separated. The same person is often the relationship, the process, and the memory for a slice of the business—the **bus factor** for that account is one. When that one person leaves, you don't have a team holding a client. You have a single point of failure with a calendar invite.

Key person risk is different from [tribal knowledge](https://heykiku.com/glossary/tribal-knowledge), even though they travel together. Tribal knowledge is the information problem—facts living in one head instead of a system. Key person risk is the business problem that information creates: **revenue, client trust, and continuity all routed through a person who can quit, burn out, or get poached.** Agencies obsess over client concentration—"no client should be more than 20% of revenue"—while ignoring that a single employee can be a bigger liability than any single client.

The defense isn't cloning your best people or writing a manual nobody reads. It's making one person's knowledge available to the rest of the team before they're gone. heykiku de-risks a departure by keeping the key person's accumulated context—client preferences, process decisions, the backstory behind each account—queryable by everyone who needs it, so when they leave, the relationship and the know-how don't leave with them.

## Related terms

- [Tribal Knowledge](https://heykiku.com/glossary/tribal-knowledge)
- [Institutional Memory](https://heykiku.com/glossary/institutional-memory)
- [Offboarding](https://heykiku.com/glossary/offboarding)
- [Team Onboarding](https://heykiku.com/glossary/team-onboarding)