Reference checks are worth doing only if you accept two facts: the candidate chose these people, so the sample is biased positive; and referees rarely volunteer negatives, so the signal lives in specifics, enthusiasm levels, and what goes unsaid. This guide structures a 20-minute call that extracts real information from a friendly witness. Always get the candidate's consent before contacting anyone, and never contact a current employer without explicit permission.

Opening — set the frame (2 minutes)

Say: Thanks for taking the time. We're at the final stage with {{Candidate name}} for a {{Role title}} role — this is a real conversation, not a formality, and the more candid you are, the better we can set them up to succeed. Nothing you say will be quoted back to them. How do you know them, and how closely did you work together?

Weigh everything that follows by that last answer: a direct manager for two years is a strong witness; a colleague from an adjacent team is a character reference.

Verification (3 minutes)

• What was their actual title and the period you worked together?
• What was the scope of their role — team size, budget, what they owned end to end?
• The candidate told us they {{Key claim from interviews}}. Does that match your memory of it?

Discrepancies here are the highest-severity finding a reference call can produce. Small memory drift is normal; inflated scope or invented ownership is not.

Performance and strengths (5 minutes)

• What were they genuinely best at — the thing you would rehire them for tomorrow?
• Can you give me a specific example of that strength changing an outcome?
• Compared with others you've managed in similar roles, where would you place them — top 10%, top quarter, solid middle? (Forced comparison beats adjectives; listen for hesitation.)

Growth areas (5 minutes)

Nobody answers {{What are their weaknesses?}} honestly. Ask instead:

• What did you have to coach them on most?
• If they joined a new team tomorrow, what should that manager do in the first month to get the best from them?
• What kind of environment or work brings out their worst — where would you not deploy them?
• What's the biggest thing they grew in while you worked together? (The starting point of that growth is the honest weakness.)

The two closing questions (3 minutes)

• The rehire question: If you had an open role for them today, would you hire them again? (Anything short of an immediate, unqualified yes — a pause, a {{it would depend on the role}} — is the single most informative moment of the call.)
• The open door: Is there anything I haven't asked that I should have?

Reading the call

Rules

• Do references live by call, never by written questionnaire — the signal is in tone and pauses.
• Two or three references, consistently for every finalist — not just the ones you doubt.
• Ask only job-related questions: nothing about health, family plans, age, or any protected characteristic, even in small talk.
• Write notes during the call and file them with the loop's scorecards; references are evidence, and they belong in the same decision record.