Utah Code § 78B-1-109: Excuse from jury service -- Postponement.

(1) A court may excuse an individual from jury service:

(a) upon a showing:

(i) of undue hardship;

(ii) of public necessity;

(iii) that the individual is a mother who is breastfeeding a child; or

(iv) that the individual is incapable of jury service; and

(b) for any period for which the grounds described in Subsection (1)(a) exist.

(2) An individual described in Subsection (1) shall make the showing described in Subsection (1)(a) by affidavit, sworn testimony, or other competent evidence.

(3) The court may postpone jury service upon a showing of good cause.