A medical exemption is cause for excuse from jury service. A letter from your physician must be attached to the juror summons and return to the court.
Job related exemptions require a letter from your employer. Since jury service is for a very limited amount of time, your employer must show that your presence is vital and that your absence would create an undue hardship.
Eligibility for jury duty stays in place as long as you live in King County. However, if you are now living a great distance away and travel is a hardship, you may request in writing to be excused.
A postponement of jury service can be obtained by writing to the court on the space provided on the summons.