Brendan Rodgers has urged his Liverpool players to take notice of the "warning signs" after some shock results in the Premier League this week.
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Title-chasing Manchester City were held to a surprise 2-2 against struggling Sunderland, while fifth-placed Everton were beaten 3-2 by Crystal Palace.
Ten league wins in a row have put Liverpool top of the table with four games remaining, but Rodgers is wary of complacency as they prepare for Sunday's game at Norwich.
"I said to the players this morning before training that if there is anyone looking at a rival dropping points, then also take it as a warning sign, it is never easy at this stage," Rodgers said in the Telegraph.
"When you're so close to the finish line, you can maybe think that the job can be done and is done.
"Teams can think that they are playing teams towards the bottom and that the games might be easy but actually it's the contrast -- they can be even more difficult.
"People are fighting for their livelihoods, fighting for their lives, fighting for their children, for the supporters. They're fighting to play in the best league in the world.
"Last night was a warning sign for everyone that, at this point of the season with four games to go, there is nothing guaranteed. I have said that all along. Crystal Palace had an excellent result at Everton, and Sunderland were within minutes of getting a great victory at Man City.
"Yes, one of the rivals might have dropped points but that is irrelevant. You have to do your own job.
"The warning signs are there. We certainly don't have our hands up in the air. The finishing line is a wee bit out so we just need to focus and keep producing the performances that we have. If we do that, we will hopefully take three points at the weekend."