In a tender the works are measured using NRM2. This details preliminaries (people cost). Would changes to these be a compensation event?
A Contractor could choose to allocate people between jobs to a site when they are not required. How could a client avoid paying for this assuming the works have not changed?
A Contractor may not provide the levels of people and equipment stated in the BoQ. Again how could this be avoided?
Does this option only refer to the physical works becoming a compensation event if the actual quantities change from the BoQ amounts?
It is best if answer your last question first.
And the answer is ‘Yes’, of all the things listed by you, it is only a change in quantities under option B clause 60.4 or 60.5 which may cause a compensation event due to change in quantities.
I am not familiar with NRM2, so all I can say is that a change in People costs MAY cause a change in how a compensation event is assessed in terms of the rates that people are charged at. Having said this, under the priced based options A and B, if the Contractor references an input cost at tender as a Defined Cost, then this is the rate used for CEs thereafter. Not knowing NRM2 or how this was referenced I cannot say for certain though.
For your points 2 and 3, these are essentially Contractor risks, so will not affect how much you pay.