Bilic signed a three-year-deal at Upton Park last June, and he was tasked with keeping the side out of the relegation zone.
The Mirror has now suggested that West Ham are set to offer him a contract to keep him at the club until 2021, but Bilic insists that he is not too concerned about signing a new deal.
"I have a contract, I said the same at (his previous club) Besiktas - my contract is my work and only good work guarantees me that," he said.
“What it says on paper, OK, it can give you a little bit of security but that doesn’t protect you from bad things. So my contract is my daily work, my next few games, but I am extremely happy here.”
Bilic has earned the backing of all West Ham supporters, and he has the London side playing with style and grit.
The Hammers have looked very dangerous on the counter-attack this season, and they have picked up some notable scalps.
West Ham look set to finish in a lofty position in the Premier League table, as they chase a European spot over the rest of the campaign.