Building contracts - Principals and sub-contractors - Progress payments - Entitlements - Claim - Dispute - Statutory adjudication process - Need to avoid excessive technicality - Determination - Validity - Procedures - Application for adjudication - Time limit - Electronic initiation of claim permissible - Deference to adjudicator's authority - Single lodgment of two claims - Whether two payment claims were made - Whether payment claim could be made despite previous claim - "Made" - Building and Construction Industry Security of Payment Act 2002 (No 15) ss 14 16 18 23 28O 28Q 28R 51.

Administrative law - Judicial review - Remedies - Availability - Certiorari - Privative clause - Hickman principle - Construction progress payment disputes - Statutory adjudication process - Amenability to review - "Adjudication determination" - Building and Construction Industry Security of Payment Act 2002 (No 15) - Constitution Act 1975 (No 8750) s 85

Practice and procedure - Electronic service of documents - Time - Ascertainment - Arrival at recipient's server - Availability for retrieval.

Administrative law - Judicial review - Reasons - Adequacy - Statutory obligation - Path of reasoning from evidence to facts to conclusion - Conflicting medical opinions - Accident Compensation Act 1985 (No 10191) s 68

Administrative law - Judicial review - Remedies - Availability - Certiorari - Error of law on face of record - Mandamus - Accident compensation - Medical panel opinion - Accident Compensation Act 1985 (No 10191) s 45

Estoppel - Issue estoppel - Workers compensation - Entitlement - Medical or like expenses - Claim for declarations - Medical panel - Opinion - Accident Compensation Act 1985 (No 10191) ss 45(1) 99