The Hammers suffered a 1-0 defeat at the hands of Tottenham Hotspur earlier today in their opening game of the Premier League season, but Allardyce says that any decision regarding his future at this stage has already been made.
"If they're going to do it after one game they might as well have done it at the end of last season," the 59-year-old told Sky Sports News.
"Why wait until now? Why do the whole pre-season we've done, create what we've tried to create and buy what we've tried to buy under my stewardship and then do it after one game?"
West Ham are back in action next weekend with a trip to face Crystal Palace.