The Art of Praising a Colleague Without Sounding Like a Hallmark Card
Writing a testimonial letter for a colleague is one of those tasks that seems simple—until you sit down to actually do it. Suddenly, you’re staring at a blank screen, wondering how to express just how amazing they are without sounding like you’re writing their fan mail.
Should it be formal? Should it be personal? Should you throw in an inside joke about their coffee addiction?
A well-written testimonial letter is a powerful endorsement that can help your colleague secure a promotion, land a new job, or simply get the recognition they deserve. The key is to strike a balance between professionalism and authenticity, making sure your words are both genuine and impactful.
So, let’s break down exactly how to craft a testimonial letter that stands out and leaves a lasting impression.
What is a Testimonial Letter for a Colleague?
A testimonial letter for a colleague is a formal or semi-formal recommendation that highlights their skills, work ethic, achievements, and character. It is commonly used for:
- Job applications (as a reference or recommendation)
- Promotions or internal opportunities
- Award nominations
- LinkedIn recommendations
- Professional portfolios
Unlike a generic reference letter, a testimonial letter adds a personal touch—it’s not just about listing qualifications but about showcasing why this person is exceptional.
How to Write a Strong Testimonial Letter for a Colleague (Step-by-Step Guide)
Start with an Engaging Opening
A strong opening sets the tone for the rest of the letter. Instead of the usual “I am writing to recommend…”, make it engaging and impactful.
✔ Example:
“When I first met John, I knew right away that he was the kind of colleague who could turn even the most challenging projects into success stories.”
🚫 Avoid:
“I am writing to provide a testimonial for John.” (Too bland and uninspiring.)
Introduce Your Relationship & Context
Explain how long you’ve worked together and in what capacity. This helps establish credibility and context for your testimonial.
✔ Example:
“I have had the pleasure of working alongside Lisa for five years at XYZ Corporation, where she has consistently demonstrated her expertise in project management and her ability to lead with both strategy and empathy.”
🚫 Avoid:
“I know Lisa from work.” (Too vague—provide specifics.)
Highlight Key Strengths & Achievements
Now, focus on what makes your colleague stand out. Is it their leadership? Problem-solving skills? Work ethic? Use specific examples to back up your praise.
✔ Example:
“One of the most impressive things about Mike is his ability to turn complex data into actionable insights. During a major product launch, his data-driven strategies increased our conversion rates by 35% in just two months.”
🚫 Avoid:
“Mike is good at his job and works hard.” (Too generic—lacks depth.)
💡 Pro Tip: Use quantifiable results whenever possible. Numbers and statistics make testimonials more persuasive.
Showcase Their Soft Skills & Work Ethic
Hard skills are great, but character and soft skills can make a candidate stand out even more.
✔ Example:
“Beyond his technical expertise, Mark is an outstanding mentor. He has taken the time to train and guide junior employees, fostering a culture of continuous learning within our team.”
🚫 Avoid:
“Mark is nice to work with.” (Too generic—describe how he contributes to a positive work environment.)
Talk About Their Growth & Potential
A great testimonial doesn’t just reflect on past achievements—it also hints at future potential.
✔ Example:
“I have no doubt that Priya will continue to excel in any leadership role she takes on. Her strategic mindset and ability to navigate challenges make her an invaluable asset to any team.”
🚫 Avoid:
“I think Priya will do well in the future.” (Lacks enthusiasm and specificity.)
End with a Strong, Memorable Conclusion
Wrap up your testimonial with a final endorsement that leaves a lasting impression.
✔ Example:
“I wholeheartedly recommend David for any opportunity that comes his way. His dedication, expertise, and leadership qualities make him a standout professional. Any organization would be lucky to have him on board.”
🚫 Avoid:
“I think David is good at his job, and I recommend him.” (Too weak—doesn’t reinforce impact.)
Example Testimonial Letters for a Colleague
Testimonial for a Job Application
[Your Name]
[Your Position]
[Company Name]
[Email]
[Date]
To Whom It May Concern,
I am delighted to write this testimonial for [Colleague’s Name], with whom I have had the pleasure of working for the past [X] years at [Company Name]. In that time, I have seen firsthand [his/her/their] exceptional skills, unwavering dedication, and ability to drive results.
One of [Colleague’s Name]’s greatest strengths is [his/her/their] ability to [specific strength, e.g., “streamline complex processes to increase efficiency”]. For example, [specific achievement or project]. Thanks to [his/her/their] efforts, our team was able to [quantifiable impact, e.g., “reduce project turnaround time by 30%”].
Beyond technical expertise, [Colleague’s Name] is also an incredible team player. [He/She/They] fosters collaboration, mentors junior employees, and maintains a positive work environment even under pressure.
I strongly recommend [Colleague’s Name] for any opportunity that aligns with [his/her/their] skills and aspirations. Any organization would be fortunate to have someone of [his/her/their] caliber.
Sincerely,
[Your Name]
LinkedIn Recommendation Testimonial
*”I had the pleasure of working with Emily for three years at XYZ Corporation, where she consistently impressed me with her leadership, analytical skills, and ability to handle even the most complex projects with ease.
One of Emily’s most notable achievements was leading our marketing campaign that resulted in a 40% increase in customer engagement. Beyond her professional skills, she’s an incredible team player who always finds time to mentor others.
I highly recommend Emily for any role that requires strategic thinking, creativity, and strong leadership. Any organization would be lucky to have her!”*
FAQs
How long should a testimonial letter for a colleague be?
It should be between 200–400 words—long enough to provide meaningful insights but concise enough to remain engaging.
Can I write a testimonial for a colleague I didn’t work with closely?
Yes, but focus on what you did observe, such as their professionalism, work ethic, or teamwork.
Should I include humor in a testimonial letter?
Only if appropriate. If the testimonial is for a formal job application, keep it professional. For a LinkedIn recommendation, a light-hearted touch is fine.
Can I write a testimonial if I wasn’t their manager?
Absolutely! Peers, teammates, and even clients can write valuable testimonials.
Should I get my colleague’s approval before submitting the testimonial?
If it’s a public recommendation (LinkedIn, website), yes. For job applications, no—but ensure your words are accurate and professional.
Your Words Can Boost a Career
A well-crafted testimonial isn’t just a favor—it’s a career booster that can open doors for your colleague. By focusing on specific achievements, soft skills, and future potential, you can write a testimonial that is both impactful and memorable.
So, the next time you’re asked to write one, don’t panic—use this guide and make it count.
