A strong reference list is often treated as an afterthought — three names and phone numbers thrown together at the last minute — even though a reference call happens at the final stage of a hiring decision, when a company is close to an offer and looking for a reason to confirm the choice, not looking for a reason to reject it. A well-chosen, well-prepared reference reinforces that confidence; an unprepared one, caught off guard, can introduce doubt at the worst possible moment.

Who actually makes a strong reference

A direct former manager is usually the strongest reference, since they can speak to your actual day-to-day performance and growth with real authority. A senior peer or a cross-functional partner you worked with closely can be a strong second or third reference, especially if they can speak to collaboration or a specific project a manager might not have been as close to. A reference who barely worked with you, even if their title is impressive, is weaker than someone with a real, specific working relationship regardless of seniority.

Always ask before listing someone

Never list a reference without asking first, ideally with real advance notice rather than a rushed message right before you need them contacted. Beyond simple courtesy, asking in advance also tells you something important: hesitation in someone's response ("uh, sure, I guess so") is a genuine signal that they might not give you the strongest reference, and it's better to learn that before a company calls them, not after.

Give every reference real context before they're contacted

A reference who's caught off guard, without knowing what role you're applying for or what to emphasize, gives a vaguer, less useful reference than one who's had five minutes to think about it in advance. Before listing someone, send a short message:

"Hi [Name], I wanted to give you a heads-up that I've listed you as a reference for a [Job Title] role at [Company]. If you're contacted, it would be great if you could speak to [one or two specific things — a project you worked on together, a specific skill]. Happy to send more detail if useful, and thank you again for being willing to do this."

This does two things: it confirms they're still comfortable being listed, and it primes them to mention the specific things most relevant to the role you're applying for, rather than whatever comes to mind first.

Match the right reference to the right role

If you're applying for a role that emphasizes a specific skill or project, choose the reference who can speak to that specific thing most directly, rather than defaulting to the same three people for every application. A reference who directly witnessed the exact kind of work the new role requires is more useful than a more senior reference with a vaguer, more general impression of you.

What to do about a reference you're unsure about

If your most recent manager isn't someone you're confident will give a strong reference — a strained relationship, a role that ended badly — it's reasonable to lean more heavily on other references (a peer, an earlier manager, a client) rather than including someone you have real doubts about, especially if you have other strong options. If you're asked directly why a specific recent manager isn't listed, a brief, neutral answer ("we didn't work together long enough for them to speak to my work in depth" or something similarly true and non-negative) is enough; you don't need to explain a difficult relationship in detail.

Following up afterward

A brief thank-you to each reference after the process concludes, regardless of outcome, costs almost nothing and keeps the relationship warm for next time — see our guide on working with recruiters for the parallel etiquette on that side of the process. And once you've got your references locked in, make sure the rest of your application is doing its share of the work — our Cover Letter Generator and guide on writing a cover letter that gets read help make sure a strong reference isn't compensating for a weak application elsewhere.