Five Premier League managers have already lost their jobs this season - and we're only three months in.
Watford, unsurprisingly, were the first to part company with their coach as Xisco Munoz got the boot in early October.
Steve Bruce's Newcastle exit followed two-and-a-half weeks later after a Saudi-backed consortium completed a takeover of the club, another expected call.
Nuno Espirito Santo was next to fall in early November - just two months after winning the Premier League Manager of the Month award.
Perhaps the most ruthless sacking of the season so far came at Aston Villa, with boyhood fan Dean Smith dismissed after five consecutive defeats.
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Just a day before Smith said his goodbyes, Daniel Farke was relieved of his duties at Norwich. Smith replaced him at Carrow Road nine days later.
Although five have already been paid off, more managers are expected to be shown the door before Christmas.
Here, Mirror Football reveals which managers are safe and which should block their owner's phone number.
Beyond question
Manchester City will never sack Pep Guardiola. The only question is how many trophies the Spaniard's fabulous team will win this season.
It's a similar situation at Liverpool. Jurgen Klopp is one of the most popular managers in the club's history and will always be loved at Anfield.
Although Chelsea have a reputation for sacking managers, Thomas Tuchel can be thrown into this category too - but just for this season.
All three managers have a realistic chance of winning the Premier League title and none of them will be considering their position until the race is over.
Safe as houses
The obvious candidates for this category are the three who've just been appointed: Norwich's Smith, Villa's Steven Gerrard and Tottenham's Antonio Conte.
Smith did a marvellous job at Villa - establishing the former European champions as a Premier League club again - and will be given time at Norwich, even if they're relegated.
Gerrard has replaced Smith in Birmingham after an impressive start to his managerial career, guiding Rangers to their first Scottish Premiership title in a decade last term.
The Liverpool icon has inherited a good squad and, unless something drastically bad happens, will be given time to inspire his new players.
Conte arrives at Tottenham with a tremendous coaching CV - which includes a Premier League title - although there are still concerns over how he'll get on with Daniel Levy.
The Spurs chief is notoriously frugal with the club's cash and the Italian could become frustrated if the upcoming transfer window doesn't go his way.
But he - along with Smith and Gerrard - isn't worried at this moment in time. And neither is West Ham boss David Moyes.
The Hammers are in dreamland under the Scot, going well in the Premier League, Europa League and League Cup. Moyes could end up doing something special this season.
It's hard to imagine Brentford manager Thomas Frank getting the sack after a solid start the season - and the same can be said about Brighton gaffer Graham Potter.
Although Leeds have had a tough start to the season, Marcelo Bielsa won't get the boot. The Argentine is adored at Elland Road and will leave before he's pushed.
And Leicester are more worried about keeping hold of Brendan Rodgers rather than sacking him. But more on Manchester United later.
Secure, for now
Mikel Arteta can count himself unlucky to be included in this category as Arsenal haven't lost since August - but the mood can change very quickly at the Emirates.
A few injuries would derail the Spaniard's hopes of European football and there are still plenty of Gunners fans - on social media, at least - who want him out.
Speaking of Arsenal, their former captain Patrick Vieira has made a good start to life at Selhurst Park, picking up 15 points this term.
And, as the Crystal Palace fans will tell you, performances under the Frenchman have also been impressive. The worry for Vieira is that it's still early days.
For much of their current eight-and-a-half-year spell in the Premier League, Palace have existed to survive. Vieira wants to take the club onto the next level and that's a risk.
It's a similar situation at Wolves. After years of playing under Nuno's caution, new manager Bruno Lage has deployed a more attacking style of play at Molineux.
So far, it's working. Lage's team have took 16 points and are full of confidence. Maintaining that during the Christmas period will be a challenge.
For the first time in years, Sean Dyche's position at Burnley is starting to look less secure. The Clarets have won just once this season and are in the relegation zone.
Burnley are under new ownership following Alan Pace's takeover in January and he may decide to pull the trigger if results don't improve soon.
And, although Eddie Howe has just been appointed Newcastle's head coach, he needs results quickly to turn around the situation at St James' Park.
The Toon haven't won this season and are five points from safety. If they're still in that position in a few months, Howe will be given the boot.
Hovering above danger
Watford are ruthless when it comes to sacking their manager - and not even the recently appointed Claudio Ranieri is safe.
The Italian has made a decent start to life at Vicarage Road, securing a famous 5-2 win at Everton, and will need more wins like that if he's to finish the season at Watford.
Speaking of Everton, things aren't going great for Rafa Benitez. The Liverpool legend's new team have taken just one point from their last five fixtures.
Benitez was an unpopular choice in the first place because of his Anfield links and few Evertonians will be disappointed to see the back of him if their bad run continues.
And Southampton manager Ralph Hassenhuttl remains under pressure after a slow start to the season, although back-to-back wins against Watford and Villa has eased his fears.
On the edge
A special category for Ole Gunnar Solskjaer. The Norwegian is likely to be the next manager to be sacked after Man Utd won just one of their last six Premier League games.
Rumours suggest Solskjaer's long-term future at the club is non-existent and his short-term situation is becoming untenable after humiliating defeats to Man City and Liverpool.
Rodgers, Zinedine Zidane, Mauricio Pochettino, Erik Ten Hag and Luis Enrique have all been linked with the job in recent weeks and it appears a decision will have to be made soon.
United's failure to identify a candidate could keep Solskjaer in a job, although his former team-mates in the media are starting to turn on him.
"He's done actually what he's been brought in to do," said Rio Ferdinand earlier this month. "He's come in and given the fans hope again, made the fans want to come back and watch your team again.
"He's done that. He has done a great job in that sense. But is he going to take us to win titles? Is he going to make us challenge to win a Champions League?
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"The football club will be living here and breathing here longer than any individual. It's what's best for this football club.
"I just feel that maybe it might be time now for the baton to be handed over. Who can take us on now? And I think Ole would leave now with his head held high."
The writing is on the wall.
