We are a Contractor on an NEC3 Option A infrastructure project.
The contract includes a number of access dates for individual stretches of pavement.
Access has been provided for all stretches as per the contract. However access to the final portion of pavement has been given approximately 2 months early, meaning we will be able to finish the entire contract works 2 months early (May-21 instead of the contract completion date which is July-21).
Our activity schedule includes individual lines for monthly Prelims over the duration of the job.
The employer (via the PM) is saying that because we will be finishing 2 months early, we should not claim the Prelims activities for June and July as we will be finished and off site.
Do they have any basis for this contractually and how should we respond.