Interesting point since one is voluntary and one isn’t..
No, prior to 9/11 they voluntarily paid employees for jury duty, regardless of the term, one guy served 18 months (!) on a Federal Grand Jury. After 9/11 jury duty pay was reduced to the statutory minimum, five days. It was only during Gulf War I that they changed the policy with regard to military leave, and that was voluntary. I don’t think employers have to pay anything for Guard Duty.