Principle
A commercial hire is a substantial capital commitment made on the basis of two conversations and a document the candidate wrote about themselves. The reference check, which is the only step in the process capable of introducing independent evidence, is almost universally conducted as a formality after the decision has already been made.
Behaviour
A candidate performs well in interview. Interviewing is a distinct skill from selling, but it correlates well enough with articulacy and presence that a persuasive candidate is easy to mistake for an effective one. By the time references are contacted, the hiring manager has invested emotional and political capital in the appointment, has told colleagues about the candidate, and is now seeking confirmation rather than information.
The references themselves are supplied by the candidate, which means they are selected. They are typically contacted by someone junior, asked general questions, and interpreted charitably. A former manager who describes a candidate as strong on relationships and needing support on process has, in the language of references, said something significant, and it is almost never heard as such.
The consequence is that the single most predictive input available, the direct observation of the candidate's actual performance by someone who managed it, is collected in a form designed to be uninformative and processed by a party who no longer wants to hear anything discouraging.
The only step capable of introducing independent evidence is conducted as a formality after the decision has already been made.
Evidence
Establish, for the last twenty commercial hires, whether the reference conversation occurred before or after a verbal offer was extended. Where it occurred afterward, the check was ceremonial by construction and cannot have influenced the decision.
Examine what was asked. A reference conversation consisting of confirmation questions, would you rehire, was their performance strong, produces confirmation. A reference conversation asking for a specific example of a deal the candidate lost and what they did next, or asking the referee to rank the candidate against their peer group, produces information. The two formats are not comparable and only one has diagnostic value.
Correlate reference source against subsequent performance. Candidates whose references were exclusively supplied by themselves, rather than including at least one contact identified independently through the network, should show measurably worse outcomes. Where the organisation has never sourced an independent reference, it has never gathered a data point the candidate did not select.
Psychology
Hiring managers are subject to a powerful commitment effect. Having chosen a candidate, having sold that choice internally, and having invested weeks in the process, the psychological cost of reversing the decision is high and the cost of proceeding is deferred and shared. A reference that raises a concern arrives at exactly the moment when the manager is least able to act on it.
Referees, meanwhile, are constrained by convention and by legal caution. Direct criticism of a former employee carries risk and offers no benefit, so referees communicate concern through omission and understatement. A hiring manager listening for confirmation will not detect either, and the entire exchange satisfies both parties while transmitting nothing.
Commercial Risk
Commercial hiring is one of the largest recurring discretionary cost decisions a growth-stage business makes, and it is being made on evidence the candidate curated. The cost of a failed senior commercial hire, in salary, opportunity cost, disrupted accounts, and the eighteen months typically required to identify the failure and replace them, routinely exceeds the cost of the diligence the organisation declined to perform.
For an acquirer, this matters at two levels. The existing team was selected by this process and its quality distribution reflects that. And any post-acquisition plan involving significant commercial hiring will use the same process to fill the roles the plan depends on, unless someone specifically intervenes to change it, which is not typically a line item anybody thinks to include.
Investment Committee Note