A professional character reference letter, which refers someone for a job position, is written by a professional of some sort who knows the subject of the letter well. This subject asks the professional to vouch for him by writing a letter to describe his qualities, achievements and character traits. The letter should provide a positive recommendation of the subject.
Address the letter. Begin the letter by either writing "Dear," followed by the reader's name, or "To Whom It May Concern." Ask the subject of the letter to whom it should be addressed if you do not know.
Write an introduction. Start a professional character reference letter by introducing yourself and by explaining how you know the person you are referring. Limit this to one paragraph and include any of your relevant qualifications or achievements to increase your credibility with the reader.
Describe the person. Using constructive adjectives, begin describing the individual. Use words such as ambitious, courteous, hardworking and organised -- as long as those words honestly describe the individual. Describe his or her achievements and awards as well as qualifications and skills.
Include a story. If you have a short story to tell that demonstrates a good virtue or character trait of the subject, include it in the reference letter. Keep the story brief, however; a professional character reference letter should be no longer than one page.
Recommend the person. Explain to the reader that you highly recommend this person for the position he or she is trying to obtain. To make the letter more general, write that you highly recommend him or her for any position.
Close the letter. Let the reader know that if he has any questions, he should feel free to call you. Include your phone number and e-mail address. Sign the letter "Sincerely," followed by your name.