Since so many defendants are prone to protracting litigation in an attempt to avoid liability, or at least put off the inevitability of a judgment for the plaintiff, there are sometimes provisions in the law that require defendants to pay more than the judgment eventually entered by the court.
Depending upon the case and the applicable law, this can include both pre-judgment and post-judgment interest, as well as outright penalties and, in a recent black lung case, “additional compensation” of up to 20%.