NEC ECC: Should an NEC3 Option C Contractor be applying for Inflation (X1) to their NEC3 Option A Subcontractor's 'costs'?

NEC3 and NEC4 Contracts Secondary X, W and Y options
1

I represent the client and the Contractor is working under an ECC

2

The answer is NO as X1 operates to add an inflationary adjustment amount to the Prices (target) based on the value of an interim assessed amount of PWDD due.

The adjustment to the Prices is made based on when cost is actually incurred, by applying a Price Adjustment factor (PAF) calculation, which compares the current indices with the Base Date Indices (as stated in the Contract Data).

3

Thanks for your answer… in theory the Contractor’s PWDD will include works associated with their Subcontractor’s Option A Subcontract Agreements… on that basis it sounds like whether they award their Subcontract agreements under an A, C etc. is irrelevant?