You must report to court and speak with the court personnel - you may be required to go before a judge to hear your excuse/reason, who MAY, or may not, release you from service.
(in the US) Suffice it to say that it is a violation in ALL states and federal jurisdictisons. How it is treated may vary from place to place and court system to court system. In short: There is no...
around twenty to thirty times in the age from thirty to fortyAnother View: The first answer is unrealistically high. Most jurisdictions limit your service on jury duty to once every number of years....