The sacking of Aston Villa manager Steven Gerrard after just 343 days is a reminder that the shelf life of Premier League managers, though admittedly longer than some British prime ministers, is getting shorter every year.
It doesn't matter how big a name they might be, if the results don't come, the exit door beckons.
According to a BBC survey, managers in the top flight last an average of just two years and four days at one club.
This contrasts with a similar survey in 2012 when the average time was nearly four years.
In the current Premier League, the longest serving manager is Juergen Klopp who has been at Liverpool for just over seven years, followed by Pep Guardiola with six years and 120 days at Manchester City.
It is no coincidence that the longest-lasting managers are at the helm of the two most successful clubs in recent years.
In third place is Brentford's Thomas Frank who has been with the Bees for just over four years although of course two of those were in the Championship.
Other current managers who have lasted more than three years are Ralph Hasenhuttl at Southampton and Leicester City's Brendan Rodgers, both of whom have been tipped to be sacked in recent weeks.
This situation reflects the short-termism which prevails in football in that even if you have been successful for several seasons, once the results go against you, it's goodbye.
One other survivor has been Graham Potter who had spent more than three years at Brighton before moving of his own accord to Chelsea.
Les Miserables
The doubtful honour of being the manager with the shortest reign in the Premier League goes to Charlton Athletic's Les Read who lasted at the Valley for a grand 41 days.
After just one win in the League and being knocked out by Wycombe Wanderers in the League Cup, Read got the boot on Christmas Eve in December 2006.
Charlton fans nicknamed him "Les Miserables" because he always looked so glum on the touchline.
It is somewhat ironic that when he was sacked, Read had just completed a book on how to be a successful manager entitled The Official FA Guide to Basic Team Coaching.
Other Premier League managers who scarcely had time to unpack their bags were Rene Meulensteen who lasted at Fulham just 75 days and Frank de Boer who survived only 77 days at Crystal Palace.
De Boer had a nightmare start to the 2017 season with no points and no goals after the first four games. Roy Hodgson went on to rescue Palace that season.
Rounding off the top five "failures" is Bob Bradley at Swansea (84 days) and Quique Sanches Flores who lasted 85 days at Watford, a club that has never been shy about showing a manager the door.
Outside of the Premier League the number of managers who had short-lived stays at their clubs are far too numerous to mention.
Perhaps the most memorable was the sacking of Brian Clough by Leeds United in Sept 1974 after just 44 days.
Clough's appointment was a shock in the first place as he had publicly criticised Leeds' playing style as "dirty" and also had no time for the club's former manager Don Revie.
Clough didn't help himself by telling the Leeds players at the first training session "You can throw your medals in the bin because they were not won fairly."
Former Manchester United star Steve Coppell experienced an unhappy time as manager of Manchester City and resigned after 33 days saying the pressure of the job was too much.
However, he bounced back, winning promotion to the top flight for both Crystal Palace and Reading.
More recently, another former United star Paul Scholes only lasted as manager of Oldham Athletic for 31 days.
Scholes said he left because the club owner was interfering with team selection.
The ultimate "short stay" was that of Leroy Rosenior, now a TV pundit, who lasted in the hot seat at Torquay for just 10 minutes.
To be fair, within minutes of his appointment the club was taken over by a new owner who immediately announced a clearout of all former staff and poor old Leroy was gone.