It happens regularly that a Contractor starts work on a letter of award and some time later he signs the contract.
It also happens that in the mean time things have changed in respect of changes to both time and money.
The Top Man signing has not been told that he is waiving his rights to claims for money and / or time.
Ignorance is not Bliss.
Best regards
Mike T.
if its not in writing you have nothing why proceed at your own risk ? WHat if the funding ofr that prjetc falls through and they pull it from the books ? you stand to possibly lose the money that you have alreayd incurred.