A strong recommendation focuses on specific examples of a person’s work, not generic praise. Whether you’re writing one for a colleague, employee, or student, the core task is the same: convince the reader that this person is worth their time by backing up your claims with concrete evidence. Here’s how to write one that actually carries weight.
Tailor It to the Opportunity
A recommendation letter is directed to a specific person or opportunity. That makes it different from a general reference letter, which covers broad qualities and can be reused across multiple applications. A true recommendation highlights skills and achievements that align with the particular job, program, or award the person is pursuing. Before you start writing, ask the person what they’re applying for, what skills the opportunity values, and what they’d like you to emphasize. This context shapes everything.
For a graduate school application, the reader wants to hear about intellectual ability, analytical skills, depth of knowledge, and suitability for advanced study. For a job, they care more about work ethic, results, leadership, and how the person functions on a team. For a promotion, internal accomplishments and growth matter most. Knowing the audience lets you choose the right stories to tell.
Open by Establishing Your Credibility
Your first paragraph should answer three questions: who you are, how you know this person, and how long you’ve known them. The reader needs to understand why your opinion matters. State your title, your relationship (supervisor, professor, colleague), and the context. If you taught the person, name the course. If you managed them, describe the role they held and the type of work they did.
This paragraph is also where you plant your overall assessment. A sentence like “In 15 years of managing engineering teams, Sarah is one of the strongest project leads I’ve worked with” gives the reader a frame for everything that follows. Be direct about where this person ranks relative to peers you’ve known in similar roles.
Build the Middle Around Specific Examples
The body of the letter, usually one to three paragraphs, is where you prove your claims. General statements like “great communicator” or “hard worker” mean almost nothing without evidence. Instead, describe a situation, what the person did, and what resulted from it.
Rather than writing “John is a strong leader,” try something like: “When our team lost two members mid-project, John restructured the timeline, reassigned tasks, and delivered the final product a week ahead of the revised deadline. He kept morale steady during a genuinely stressful period.” That paints a picture the reader can evaluate.
Cover the qualities most relevant to the opportunity. Good categories to draw from include intellectual or analytical ability, communication skills (both written and verbal), initiative and self-discipline, teamwork and collaboration, creativity, and professional maturity. You don’t need to address all of these. Pick two or three that matter most for the role and develop them with real examples. Depth beats breadth here.
It’s also fine to mention a minor weakness or area of growth, especially for academic recommendations where candor is expected. Framing it as something the person recognized and improved on can actually strengthen your credibility. A letter that’s entirely glowing can read as generic.
Close with a Clear Endorsement
Your final paragraph should leave no ambiguity about whether you recommend this person. Restate your overall assessment, connect it to the specific opportunity, and express confidence in the person’s ability to succeed. If you can, offer a comparison: “I recommend her without reservation and would place her in the top 5% of analysts I’ve supervised.”
End by inviting the reader to contact you for further discussion. Include your full name, title, institution or company, email address, and phone number. Making yourself available signals that you stand behind what you wrote.
Keep the Format Professional
Use a standard business letter format. Include the date, the recipient’s name and title (if you have them), and a formal salutation. If you don’t know who will read it, “Dear Admissions Committee” or “Dear Hiring Manager” works. Most effective recommendation letters run between half a page and one full page, roughly 400 to 600 words. Anything shorter feels thin. Anything much longer risks losing the reader’s attention.
Print it on letterhead if you’re writing in a professional or academic capacity. If you’re submitting it through an online portal, a PDF version of the letterhead format is standard. Match the tone to the context: slightly more formal for academic programs, conversational but professional for workplace recommendations.
Writing a LinkedIn Recommendation
Digital recommendations on platforms like LinkedIn follow different rules. You’re writing for a public profile, not a specific application, so keep it concise and scannable. A few sentences to a short paragraph is plenty. Lead with your relationship and a strong, specific statement about the person’s abilities. Follow with one concrete example or result. Close with a brief endorsement.
Avoid vague superlatives. “Best person I’ve ever worked with” tells a profile visitor nothing. “Redesigned our onboarding process and cut new-hire ramp-up time by three weeks” tells them a lot. Think of a LinkedIn recommendation as a highlight reel, not the full game tape.
What to Leave Out
If you’re writing a recommendation for a current or former employee, stick to facts you can verify and opinions you hold in good faith. Accusations of illegal or improper conduct are a common basis for defamation lawsuits. If someone was terminated, avoid vague phrases like “fired for cause” or “unsatisfactory performance,” which can be defamatory by implication without providing real context.
Even technically true statements can create legal exposure if they’re incomplete or misleading. An employer who stated a worker was fired for drug use, but omitted that the firing was also retaliation for not hiring a supervisor’s relative, faced a defamation claim because the incomplete statement overstated the misconduct. If you have concerns about what to include, keep your statements factual, avoid exaggeration, and only share information with people who have a legitimate reason to receive it.
Beyond legal considerations, leave out personal details unrelated to the opportunity: age, health, family status, religion, or political views. These aren’t relevant and can introduce bias into the selection process.
When You Should Say No
If you can’t write a genuinely positive recommendation, it’s better to decline. A lukewarm letter often hurts more than no letter at all. Experienced admissions officers and hiring managers read hundreds of these and can spot faint praise quickly. If you don’t know the person well enough, didn’t see strong work from them, or have reservations about endorsing them, let them know honestly so they can ask someone better positioned to advocate for them.