You must allow an employee time off if they’re called up to serve on a jury.
You’re not allowed to treat them unfavourably for going on jury service, and if you dismiss them they could take you to an employment tribunal.
However, you can ask the employee to try to delay their jury service if their absence would seriously harm your business.
They can only delay jury service once in a 12-month period, and must say on the jury summons when they’ll be available.
Jury service usually lasts up to 10 days, but can be longer.