I did a quick google search and found the following on the Dept of Labor website. Note that it says that the federal goverment does not require the employer to pay the employees wages during that time, some state laws do.
"Jury Duty
DOL Web Pages on This Topic
The Fair Labor Standards Act (FLSA) does not require payment for time not worked, including jury duty. This type of benefit is generally a matter of agreement between an employer and an employee (or the employee's representative). The Bureau of Labor Statistics' (BLS) Employee Benefits Survey indicates that 87 percent of employers offer paid leave for jury duty service.
While federal law does not, some state laws require employers to pay employees who are asked to serve jury duty.
DOL Web Pages on This Topic
Employee Benefits in Medium and Large Private Establishments
Report showing participation in selected employee benefit programs, full-time employees, medium and large private establishments.
Coverage Under the Fair Labor Standards Act (FLSA)
Fact sheet on who is covered by the FLSA."
Hope this helps.
Gene