A reference check only tells you something when at least one of the people you speak to was not chosen by the candidate. That is the whole difference between a formality and a check. At CPG Recruitment, founded in March 2020 and now building teams across 25+ industries in Canada and the US, every placement runs through a layered reference process for exactly this reason: the names on a candidate’s list are a sample of one, selected by the person with the most to gain from how it reads.

What is a layered reference check?

A layered reference check is one where each conversation produces the next contact, rather than working down a fixed list the candidate supplied. The hiring team calls a nominated reference, has a full conversation, and closes it by asking that reference to name another manager or colleague who worked with the candidate. That second name is the layer. Everything useful tends to live there.

The structure matters more than the script. A list-based check gathers three opinions that were all pre-selected for the same quality. A layered check gathers opinions the candidate had no control over, which is the only way to test whether the first three were representative or curated.

Why do most reference checks fail to surface anything?

Because they are designed to confirm a decision that has already been made. By the time most hiring managers pick up the phone, the offer is drafted, the start date has been discussed internally, and the seat has been empty long enough that nobody wants to hear bad news. The call becomes a ritual, and rituals do not produce information.

The second failure is question design. Asking “was she a good employee?” invites a one-word answer that costs the reference nothing. Asking “what did she do the week the project went sideways?” requires them to recall an actual event, and events are much harder to varnish than adjectives. Teams that never fix their question design get the same useless transcript every time, which is closely related to why hiring teams lose good candidates at the final stage while waving weak ones through.

What should a hiring team ask the reference the candidate nominated?

Ask everything a normal reference call would cover, then end with one specific request: “Who was another manager who worked with them? Could I get their contact?” Placed at the end of a genuine, unhurried conversation, this reads as routine follow-up rather than suspicion, and most references answer it without a second thought.

Two details make it work. First, the call must be a real conversation, not a checklist read aloud, because people hand over contacts to someone they have built rapport with and not to an interrogator. Second, the request must be made every single time, on every reference, for every candidate. A team that only asks when it feels uneasy has turned the question into an accusation. A team that always asks has turned it into policy.

What should the second-layer reference be asked?

Ask for specifics the candidate could not have anticipated: how the person handled correction, what they were like under deadline pressure, who on the team found them hard to work with, and whether the reference would take them back onto their own team. These questions are not hostile. They are simply hard to answer with a rehearsed line.

Listen for texture rather than verdicts. A second-layer reference who says “strong operator, terrible at telling you when something has gone wrong” has given a hiring team more actionable information than a nominated reference praising the candidate for ten minutes. That first answer tells the team exactly what to manage in the first 90 days. The second tells them nothing at all.

Who on the hiring team should make these calls?

The person who will manage the hire, or a neutral third party, and never the person whose performance is measured by filling the seat. Incentives decide what people hear. A manager under pressure to close a vacancy will interpret an ambiguous answer generously, every time, without any conscious intent to do so.

This is one of the plainest arguments for outsourcing the step. An external recruiter has no stake in hearing yes, finds it far less awkward to request a second contact, and can ask blunt questions the future manager would struggle to ask about someone they have already started imagining on the team. It is also part of why a disciplined process cuts average time-to-fill from 68 days to 37 — the searches that get re-opened are the ones that skipped verification, and senior and executive hires are where that cost compounds hardest.

What should a team do when a reference contradicts the interview?

Treat the contradiction as a question to resolve, not as an automatic rejection. One negative data point from one person is not proof of anything; people fall out, teams have politics, and a single sour former colleague is a normal feature of a long career. The correct response is to get a third view rather than to act on the second.

Where the pattern repeats across independent sources, act on it. Two unconnected people describing the same behaviour is evidence, and evidence should outrank an impression formed across two pleasant hours in a meeting room. The candidate deserves a fair chance to address it directly, and a team that raises the concern openly usually learns more from that conversation than from any of the reference calls.

How should reference checks be documented?

Write them up against the same criteria used to define the role, so the notes can be compared rather than just read. If the team built an ideal candidate profile at the start of the search, the reference notes should map onto those criteria point by point, which turns a set of anecdotes into a structured comparison across a shortlist.

Keep the record factual and role-related, store it with the rest of the hiring file, and apply the same retention and privacy rules used for interview notes. Employment and privacy obligations around reference information vary by province, state and sector, so confirm the specifics with qualified counsel for the jurisdictions a business hires in.

Frequently Asked Questions

How long does a layered reference check take?

Roughly 90 minutes of calls per finalist: two nominated references at about 20 minutes each, and one or two second-layer contacts at about 25. Spread across two or three business days, it is the cheapest insurance available on a decision that will shape a team for years.

Can reference checking be outsourced to a recruitment partner?

Yes, and it is one of the clearest places a partner earns the fee. CPG Recruitment runs layered referencing as standard on every placement, and the written summary goes to the client with the shortlist rather than after the decision has been made.

What if the candidate is currently employed?

Never contact a current employer without the candidate’s explicit written permission, as doing so can put their job at risk. Work with former managers and former colleagues instead, and if the current role is genuinely the only relevant experience, agree with the candidate that those calls happen only after a conditional offer.

Do reference checks matter for internal promotions?

They matter more, not less, because familiarity replaces evidence. Speak to peers and to people who reported to the candidate rather than relying only on their current manager’s view, since the upward and downward perspectives on a promotion candidate frequently disagree.

If a business is filling a role that matters and the only references available are the ones the candidate supplied, the verification step has not happened yet. Talk to CPG Recruitment about your hiring process, or look at done-for-you recruitment if the goal is to hand the whole search over. For the founder’s-eye version of this argument, read Christian Saab on why you shouldn’t trust the references a candidate gives you.