Unlike a mediator who has to maintain an impartial position, the conciliator can be extremely pro-active. In addition to helping the parties to communicate, the conciliator can offer them advice and make suggestions to the parties in an attempt to help them reach an agreement. This is far more realistic than the impassive role of the mediator. Conciliators have considerable expertise and are often members of professional bodies such as ACAS. ACAS plays a very active role in resolving employment disputes. ACAS conciliators have vast experience that they can offer to both sides, having dealt with similar disputes in the past. Often, conciliators have more knowledge of their particular field than a judge who has to deal with a variety of different issues resulting in more disputes being resolved.