Firstly you need to identify which compensation event has occurred under clause 60.1 as "client delays" is vague - what specifically has occurred and how does this relate to any of the stated events? The compensation event procedure is the only mechanism to recover additional cost and time under the contract so you will need to identify the root cause(s) of the client delays first. It may be that a single event has occurred or it could be multiple ones.
Once you've established this you need to submit compensation event notifications for each event (clause 61.1). When they have been accepted then you can look at valuing them. Quotations for compensation events are assessed as the effect of the event on actual Defined Cost, forecast Defined Cost plus OH&P % (clause 63.2). So yes you can recover additional subcontractor costs provided you can demonstrate they were incurred due to the Employer's breach i.e. the compensation event.
Beware though, there is an 8 week time bar that could prevent you from recovering any of your costs (clause 61.1) and if you didn't give an early warning you may not recover all of your costs (clause 61.3).
Once you've established this you need to submit compensation event notifications for each event (clause 61.1). When they have been accepted then you can look at valuing them. Quotations for compensation events are assessed as the effect of the event on actual Defined Cost, forecast Defined Cost plus OH&P % (clause 63.2). So yes you can recover additional subcontractor costs provided you can demonstrate they were incurred due to the Employer's breach i.e. the compensation event.
Beware though, there is an 8 week time bar that could prevent you from recovering any of your costs (clause 61.1) and if you didn't give an early warning you may not recover all of your costs (clause 61.3).
