The Blues, who have lost their last two matches both domestically and in Europe, have slipped to sixth on the table and desperately need a victory at Stamford Bridge according to Jol whose Cottagers are placed 14th on four points from as many fixtures.
"I think if we beat them it will be the first time that they have lost three games in a week, so it puts a little bit more pressure on them,” he said.
"However, I don't know if it is an advantage or not. When they lost against Everton, it put pressure on them in the Champions League, so they had to win that game (which they lost to FC Basel).
"So to talk about must-win games, I think that for Chelsea this is a must-win game against us because they want to be champions in England."