How to Write a Reference Letter (Structure and Sample)

5 November 2026 · 6 min read

To write a reference letter, open by stating who you are and how you know the candidate, describe two or three of their strongest qualities with specific examples, connect those qualities to the job, course or role they're applying for, and close with a clear endorsement plus your contact details. Keep it to one page. A reference letter is only as persuasive as its examples, so concrete detail matters more than glowing adjectives.

Below is how to decide whether to accept the request, what to gather first, a paragraph-by-paragraph structure, a full sample, and the common mistakes that weaken a letter.

Reference letter vs recommendation letter

People use the terms interchangeably. When there's a distinction, a recommendation letter is usually written for a specific opportunity and addressed to a named reader, while a reference letter can be more general ("To whom it may concern") and used for several applications. The writing approach is almost identical, so this guide works for both.

Should you agree to write it?

Only say yes if you can write a genuinely positive and honest letter. If you barely know the person, or your view is mixed, it's kinder to say so:

I'm glad you thought of me, but I don't think I worked closely enough with you to write the strong letter you deserve. Someone from your current team may be a better choice.

A lukewarm letter can hurt an application more than no letter at all.

Also check practical points: the deadline, how the letter should be submitted (email, upload portal, sealed envelope), and whether the organisation wants a particular format or specific questions answered.

Gather information first

Ask the person for:

• The job description, course details or application they're submitting
• Their CV or résumé
• Two or three things they'd like you to highlight
• Reminders of projects or achievements you worked on together
• The name and title of the reader, if known
• The deadline and submission method

This saves you from writing something generic and lets you match your examples to what the reader cares about.

Structure: paragraph by paragraph

Opening: who you are and your relationship

State your role, your organisation, and how and for how long you've known the candidate. This establishes why your opinion counts.

I'm the Head of Customer Support at Brightline Software, and I managed Daniel Osei directly for two and a half years, from March 2023 until he moved into a team lead role last autumn.

Body paragraph 1: the strongest quality, with evidence

Pick the quality most relevant to the opportunity and prove it with a specific example: what they did, the situation, and what changed as a result. Use numbers only if you know them to be accurate.

Body paragraph 2: a second quality

Repeat with a different strength, ideally one that complements the first. If the first paragraph showed technical skill, this one might show teamwork or reliability.

Body paragraph 3 (optional): character or growth

A short paragraph on how the person handles challenges, feedback or responsibility. This is where a reader gets a sense of what working with them is like.

Closing: clear endorsement and contact details

Say plainly that you recommend them and offer to answer questions.

I recommend Daniel without reservation for the Support Operations Manager role. Please feel free to contact me at the email or phone number below if I can provide more information.

Sample reference letter

Dear Hiring Manager,

I'm pleased to recommend Daniel Osei for the role of Support Operations Manager at your company. I'm the Head of Customer Support at Brightline Software and managed Daniel directly for two and a half years.

Daniel is the most systematic problem-solver I've worked with. When our ticket backlog grew during a product migration, he analysed several weeks of requests, noticed that a large share came from the same three setup issues, and wrote a set of help articles and canned replies to address them. The backlog came down within a month, and the articles are still among our most-used resources.

He's also a generous colleague. Daniel volunteered to onboard four new hires during his second year, building a short training plan that we've since adopted for the whole team. New starters regularly told me his sessions were the most useful part of their first month.

What I value most is how he handles pressure. During outages, Daniel stays calm, keeps customers informed with clear updates, and makes sure the team takes breaks. He asks for feedback and acts on it.

I recommend Daniel without reservation. He would be an asset to any support organisation, and I'm confident he'd excel in a management role. Please contact me at [email] or [phone] if you'd like to discuss his application.

Sincerely, [Your name] Head of Customer Support, Brightline Software

Adjusting for different purposes

For character references in legal or immigration matters, the requirements can be specific, so ask the person (or their adviser) exactly what's needed.

Mistakes to avoid

• Generic praise. "Hard-working, team player, great communicator" could describe anyone. One example beats ten adjectives.
• Exaggeration. Don't claim results you can't stand behind. If the reader calls you, you'll need to back up what you wrote.
• Irrelevant personal details, including age, health, family circumstances or anything that could invite discrimination.
• Faint praise. Phrases like "Daniel completed his tasks" read as a warning.
• Excessive length. One page is usually enough. Admissions readers and hiring managers read many letters.
• Typos. They suggest the letter was rushed. A final check with a grammar checker is worth the thirty seconds.

Using AI to help draft

An AI recommendation letter generator can produce a structured first draft from your notes. That's useful for getting past the blank page, but the draft will only be as good as the details you give it. You must replace any generic claims with real examples, check that nothing is overstated, and make sure the final letter reflects your own judgement, since your name is on it. If the organisation asks referees to write personally, respect that.

If the letter feels too stiff after editing, a tone changer can help soften one or two sentences without losing professionalism.

Sending the letter

• Use the submission method requested. For emails, attach a PDF on letterhead if possible and include a short cover note.
• Name the file clearly: "Reference_DanielOsei_Brightline.pdf."
• Let the candidate know it has been sent, without sharing the letter unless you're comfortable doing so.
• Keep a copy; they may ask again.

FAQ

How long should a reference letter be?

Usually three to five paragraphs, fitting on one page. Academic references for competitive programmes can run a little longer if the institution asks for detail.

Can I ask the candidate to draft the letter for me?

Some referees do this to save time, but you must rewrite it in your own words and confirm everything is accurate before signing. Some institutions don't allow candidate-drafted letters, so check.

What if I don't know who will read it?

Use "To whom it may concern" or "Dear Hiring Manager," and keep the content broadly relevant to the candidate's field.

Can I write a reference for a friend?

Yes for character references, as long as you're honest about how you know them. For professional references, employers usually prefer someone who has supervised or worked with the candidate.