Accident compensation - Contribution injury - Industrial deafness - Attributable to exposure before and after appointed day - Amount of contribution - Period in respect of which contribution liability relates - Accident Compensation Act 1985 (No 10191), s88(4), s126A, s129B(7) and s129B(8).

Accident compensation - Contribution injury - Contribution by insurer - Assessment by commission of amount of contribution - Review by tribunal - Application for information about worker's medical treatment - Absence of consent from worker - Report by Recoveries Review Committee - Tribunal's power to release report - Tribunal's power to order medical practitoner to give evidence - Whether information of treatment after the ''appointed day'' may be obtained - Accident Compensation Act 1985 (No. 10191) s129i.