Substantial question of law allows appeal to High Court from appellate tribunal decisions, subject to prescribed time limits and two-judge bench hearing. Appeals from Appellate Tribunal State or Area Benches to the High Court lie only where a substantial question of law is involved; the High Court formulates that question and confines hearing to it, may allow extension for sufficient cause, and must deliver a reasoned judgment and may award costs. Appeals are to be heard by a bench of at least two judges and decided by majority, with provisions for resolving differences and for determining issues left undecided or wrongly decided by the Tribunal. Certified copies of judgment govern effect and relevant civil procedure appeal provisions apply.