Character witnesses are often called to testify in civil cases -- most often in family court hearings like child custody -- when a party's personal ethics or values are at issue. They may also be used in criminal cases in sentencing or other dispositional hearings. Written statements are seldom admitted when the witness/author is able to appear to personally testify in court. However, even if you will testify in court, it's wise to write a character witness statement in advance.
Make a list of positive points regarding your subject's character. Stick to generally recognised qualities like honesty and integrity. Then make a second list of qualities that might have an effect on the positives (like not doing something unless he thought he could get away with it or a tendency to minimise white lies). If your second list casts doubt on the first, you probably should not testify -- the opposing counsel will draw out these statements in court.
Write your character witness statement in the form of a character reference letter. Address it to the court or "To whom it may concern." Explain how long you've known the subject and in what capacity. Concentrate on experience that may have direct bearing on the issue, particularly if you have known the subject for a long time.
List four or five positive qualities that relate closely to the issue. If the issue is theft or robbery, you may want to emphasise situations in which the subject has exhibited honesty or resisted the temptation to do something wrong. Other situations that are noteworthy are those that require steadiness, concern for others or patience. Leave out your reactions to your subject's actions or situations you have shared -- they are not relevant to your friend's current problem. Any personal comment must relate to an aspect of the subject's character.
As briefly and objectively as possible, state only what you personally know about the subject. Be prepared to back your statement with additional examples. Your character witness statement can help people understand why something occurred. However, avoid drawing conclusions about whether the subject "could have done" what's at issue. That job belongs to the "finder of fact" -- the judge or jury.
Be as brief as possible; take no more than one page to make your point. Never use extravagant prose or fancy words. Write your character witness statement as plainly as possible so it will be easily understood. Before printing your statement, ask several people who do not know the subject to read your statement and tell you if it's easy to understand.
Print your statement on a computer or word processor. Check with your subject's lawyer or with the court to see if there is a specific form you should use for a character witness statement. Often, an affidavit form is available from the court. If no form is dictated, simply put your statement on paper with a personal letterhead. Rather than putting the date at the top of the statement, date your signature at the bottom by adding a line underneath it. If your statement will be used as an affidavit -- a legal statement or testament -- it must be witnessed by a third party. The attorney asking for the character witness statement will be able to assist you with this part of the process.
Avoid using fancy fonts on your character witness statement, use a business-sized (10 or 11-point) type and sign your statement in black or blue ink to ensure that your statement conforms to standard legal document form. Other formats may be acceptable but are certainly not as respectable.
If you're called to testify, you probably won't read your entire character witness statement in court but you can ask to refer to it to "refresh your recollection."
Don't ask your friend's attorney for help writing or proofreading your statement -- he could be accused by the opposition of telling you what to write.