If one of the parties is dissatisfied wit the decision of the trial judge about the liability or the compensation, they can appeal.
An appeal hearing ususally consists fo elgal arguments as to what the original decision should be altered
An appeal is usually made to the next highest court in the hierarchy and a panel of three judges.
It is rare for new evidence to be heard in an appeal hearing. there must be legal grounds for an appeal, more than the 'judge got the decision wrong.'.
If an appeal is made, then costs will increase because lawyers will be required to argue the reasons for the appeal.
The appeal court can agree with the original decision or reverse it. it can agree the original amount of compensation awarded or alter the amount.