Didier Deschamps admitted on Friday that Marseille can ill afford a loss against Paris Saint-Germain on Sunday after a "complicated" week for the club.
OM's bid for a place in the Champions League last 16 was held up when they lost 1-0 at home to Olympiakos on Wednesday, while striker Andre-Pierre Gignac has been dropped after an angry training ground clash with Deschamps.
Defeat against arch rivals PSG would complete a miserable week for Marseille and Deschamps admitted that his job will be on the line if his side are beaten at Stade Velodrome.
"It's part of my job, all the time. I'm conscious of it," he said.
"It's happened to others, despite good results, like Fabio Capello (who was sacked by Real Madrid after winning La Liga in 2007).
"The situation is complicated for the club and for me, but my personal situation is not the priority."
France international Gignac was angry at having been left on the bench for the visit of Olympiakos, but Deschamps said the squad had not been unsettled by the incident.
"The squad is working and preparing for the match ahead of us," said the Marseille coach at Friday's pre-game press conference.
"We'll have to make sure we show up, because OM-PSG games always have a special flavour.
"We're aware of our position in the league (10th) and we're meeting Paris, who are one of the favourites for the title in terms of their potential and their current position.
"There are all the ingredients for a great match and we'll have to be up to the task to secure a result.
"It's an important match because of what it represents for the town and the supporters. It's not an ordinary match."
PSG lead Ligue 1 on goal difference from Montpellier but go into Sunday's game on the back of a 1-0 defeat at home to Nancy last weekend that followed a 1-1 draw at Bordeaux.