I need to make one clarification. In Australia, there is a Fair Work Act. It states in section 111 that the employer has an obligation to make up the pay of a juror. That act says that this obligation ends after 10 days, but the next section of that act says if a state law is “more beneficial”, then the state law will apply. In Victoria, because of the wording of our legislation around the obligation of the employer, it means that we override the Fair Work Act.
In Victoria, we pay $40 a day for the first six days and $80 a day thereafter, but the employer has to make up the pay. In other states, they'll pay more than $40 a day—I can't quote all the numbers—and then at day 11, they'll pay even more, knowing that the employer doesn't have an obligation to make up the pay.
As for the answer to your question around the cost to employers or to the economy, an economist would have to answer that question. I just can't answer it.