9 The starting point for the fixing of an appropriate penalty is the objective seriousness of the offence. It is quite clear that, in the circumstances in which the incident occurred as outlined in my previous judgment, there was a real and obvious risk of injury if the raised section of the vehicle collapsed whilst the Tibby Rose employee was working underneath it. The defendant's submission, based on the evidence of Mr Turnbull, was that it was unforeseeable that any person performing repair work on the vehicle would come to be injured, whether fatally or otherwise, in the manner which occurred. That is an assessment that was made by reference to the overall activities of the defendant's organisation, having regard to the fact that the vast bulk of the time in which the vehicle was being utilised was to be taken up by reference to its normal activities. However, in my opinion, this is an inappropriate and impermissible manner in which to approach an assessment of the objective and overall nature of the offence. This must be undertaken by reference to each discrete circumstance in which the operation of the truck might create a risk of injury. Accordingly, the foresight and vigilance expected of this defendant applies to all of the circumstances in which persons may come to work in, on and under the vehicle, including circumstances where it may be maintained or repaired. On this basis, the fact that the truck was used on an isolated occasion for the purpose of effecting repairs does not avoid the responsibility of the defendant imposed under the Act.