OCCUPATIONAL HEALTH AND SAFETY - breach of ss 8(1) & 8(2) & s 26(1) of the Occupational Health and Safety Act 2000 - amended charge - guilty plea and appropriate penalty - corporate defendant - director defendant - objective seriousness - prior conviction - onus and standard of proof - principle of totality - criminal convictions and overseas travel - s 10 Crimes (Sentencing Procedure) Act 1999 applied to personal defendant