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).
While federal law does not, some state laws require employers to pay employees who are asked to serve jury duty.
National Compensation Survey: Employee Benefits Survey home page
This Bureau of Labor Statistics web page includes the current Annual Bulletin on Benefit Coverage as well as a link to an archive of all National Compensation Survey publications.
Coverage Under the
Fair Labor Standards Act (FLSA)
Fact sheet on who is covered by the FLSA.