How To Write A Letter Of Excuse From Jury Duty . Sample jury duty caregiver excuse letter. Steps to writing a jury duty excuse letter. Excuse Letter For Jury Duty Collection Letter Templates from unlitips.com Start by including the date, your mailing return address and your juror number. Postal service of the court’s decision. He has to reply to the court seeking to be excused from jury duty or his employer may write the letter as well.