Principle
When a commercial individual departs, the organisation retains their accounts, their CRM records, and their pipeline. It loses the informal knowledge that made any of those things work, and because that knowledge was never written down, its absence is discovered only through the accumulating failure of things that used to succeed.
Behaviour
A rep resigns and works a notice period. A handover occurs, consisting typically of a spreadsheet, several meetings, and an instruction to document open opportunities thoroughly. The successor receives account histories, contact names, and deal stages, and the organisation considers the transition managed.
What does not transfer is the substance. Which contact at the account actually decides. Which one will say yes in a meeting and then quietly obstruct. What was promised informally two years ago that the customer still remembers and the contract does not record. Why the renewal conversation has to happen in February and not March. Which internal colleague the rep relied on to unblock support escalations, and why that person helps them and might not help a stranger.
This knowledge is not withheld. It is largely invisible to the person holding it, because it has become intuition, and intuition does not present itself as a list of things to write down. The rep genuinely believes they have handed over everything they know, and they have handed over everything they know they know.
Its absence is discovered only through the accumulating failure of things that used to succeed.
Evidence
Track account performance for twelve months following a rep transition, against comparable accounts with no change of ownership. The differential is the cost of the handover, and it is frequently substantial and almost never measured.
Examine which accounts churn or contract in the year after a rep departure. Where the accounts most affected are those the departing rep held longest, the loss is relationship and context rather than territory quality or product fit, and it will recur at every future departure.
Test the handover artefact itself. Ask a successor, six months in, what they wish they had known on day one. The answers are specific, consistent across successors, and describe precisely the category of knowledge no handover template captures because no template can ask a question whose answer the departing party does not know they possess.
Psychology
Departing employees are neither motivated nor equipped to conduct a thorough handover. They have already left psychologically, they are often uncertain of the organisation's goodwill toward them, and the work benefits a successor they may never meet. Even a departing employee acting in complete good faith cannot articulate knowledge that has become tacit.
The organisation, meanwhile, treats handover as an administrative event with a template, because designing something better would require accepting that a large proportion of commercial capability lives in individuals rather than in systems, which is an uncomfortable admission for any organisation that describes itself as having a repeatable process.
Commercial Risk
Post-acquisition attrition is elevated, and attrition among commercial staff carries a cost considerably larger than the salary line, most of which appears in the following year as unexplained softness in accounts that were performing adequately before. The cost is real, is attributable, and is almost never modelled.
The corrective is structural rather than procedural. Knowledge transfers reliably only where two people have been holding the same accounts before one of them leaves, which means account coverage models with genuine redundancy cost more in the current year and are considerably cheaper across a holding period. Very few organisations make that trade, because the cost is visible and the saving is not.
For an acquirer the practical implication is that retention spend on commercial staff should be assessed against the replacement cost of their tacit knowledge rather than against the cost of recruiting a comparable individual. Those two figures differ by a wide margin, particularly for long-tenured reps holding complex accounts, and the second figure is the one that appears in every retention model while the first is the one that determines what actually happens to the revenue.
Investment Committee Note