Thank You Letter to Coworkers Examples

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Image by Theresa Chiechi © The Balance 2019

It’s important to thank colleagues who help you out at work. They need to hear that their efforts are appreciated, and that you are willing to reciprocate when you can. Sending a formal thank-you note when someone helps you at work is not only polite – it also serves to strengthen your relationship, heighten camaraderie, and build morale in the workplace.

When writing a thank-you letter to a coworker, it’s fine to keep the tone casual, as long as your format is correct. You can send a thoughtful handwritten note, if you feel that it would be well received, or an email.

What to Include in Your Thank-You Letter

Use a professional salutation and closing. In your note, specify exactly what it was you appreciated and how the person’s input was beneficial to you or to a project you worked on together.

You should also offer to help them in the future if you can. Use first names if you do so in person, and always make sure you proofread for spelling and grammar.

To add even more value to your thank-you email or letter, it’s a nice idea to send a carbon copy (“CC”) to your helper’s supervisor; for an email message, simply insert the supervisor’s address in the CC field. This helps to raise awareness of how important an asset your colleague is to the organization as a whole.

How to Write a Thank-You Letter

1. Gratitude Is Free. Be Generous With Your Thanks.

Thank-you notes aren’t just for job interviews. Send thank-you notes for job leads, networking introductions, letters of recommendation, or help with projects at work. Everyone likes to be appreciated, so if someone gives you a hand, take a moment to share your thanks.

2. Be Professional.

Use standard business-letter format and make sure your note is clear, concise, and easy to read. This is especially important if you opt for a handwritten note. Take the time to be sure your handwriting is legible (or skip the pen and send a typewritten or emailed note). Remember that it’s fine to use first names in your salutation if you work with the person every day.

3. Use a Template (But Customize Your Letter)

These templates can help you craft thank-you letters for a variety of business and employment related scenarios, including thank you letters for employees, employers, colleagues, clients, and networking contacts. Remember to customize your letter for your specific situation.

4. Proofread and Edit Your Letter Before Sending

Pay close attention to the spellings of names, job titles, and company names before you finalize your letter and send it. Proofread to ensure that your note is free of typos, formatting issues, and other problems. 

Thank You Letters for a Coworker Template

This is an example of a thank you letter to send to a coworker. Download the thank you letter template (compatible with Google Docs and Word Online) or see below for more examples.

thank you letter sample to coworkers
©TheBalance 2018 

Thank You Letters to Send to a Coworker

Sample Coworker Thank You Letters Example #1 (Text Version)

Conrad Lau
123 Main Street
Anytown, CA 12345
555-555-5555

September 1, 2018

Melvin Lee
Owner
Supply Chain Experts
123 Business Rd.
Business City, NY 54321

Dear Melvin,

Thank you so very much for meeting with me yesterday regarding the project I am working on. Our process was nearing a stand-still as we struggled with the supply-chain issue. I really appreciate your assistance, and am looking forward to implementing many of your great suggestions to prevent this issue reoccurring in the future.

It was helpful to have someone who has had experience with similar projects with whom to discuss ways of fine-tuning and optimizing our processes. Thanks to your contributions, this current project should go live well in advance of its original deadline.

I appreciate your taking the time out of your busy schedule to speak with me.

I'll be sure to send you a follow-up when this project is complete. Please let me know if and when I can return the favor.

Again, my sincere thanks for your invaluable assistance.

Sincerely,

Conrad Lau

Sample Coworker Thank You Letters Example #2 (Text Version)

Angela Jones
123 Main Street
Anytown, CA 12345
555-555-5555

September 1, 2018

Ingrid Lee
Head of Accounting
Acme Accounting Specialists
123 Business Rd.
Business City, NY 54321

Dear Ingrid,

I really appreciate you taking the time to review the budget for my new project. Your wonderful suggestions helped me to identify some items I might have overlooked, and so now I’m confident that the budget will be approved when it goes up for review next week. Your attention to detail is really impressive!

Please don’t hesitate to ask if I can reciprocate the favor and offer my assistance to you in the future.

I really enjoyed working with you, and I will keep you posted on the outcome of this current project.

Sincerely,

Angela Jones

Sample Coworker Thank You Letters Example #3 (Text Version)

Fred Rodriguez
123 Main Street
Anytown, CA 12345
555-555-5555

September 1, 2018

Casey Lee
Owner
Supply Chain Experts
123 Business Rd.
Business City, NY 54321

Dear Casey,

Thank you for all your recent help during the massive restructuring of my department. You and your staff have been indispensable in helping us to maintain our productivity even in the midst of our shuffling positions and responsibilities.

I’m confident that these changes will benefit the bottom line of the company as a whole, and I have let Rick Lam know how extremely helpful you’ve been to me and our team over the course of the past few weeks. If I can help you at all in the future, please let me know.

Regards,

Fred Rodriguez