Sam Allardyce has admitted modern-day management is one constant battle against the sack.
Allardyce feels all managers risk losing their jobs if they do not produce results.
"I have always said what drives me on is what is around the corner, and that is the sack," said Allardyce.
"It seems unfair but that is what happens to us all if we do not do well over a period of time, no matter whether you are Alex Ferguson, Sam Allardyce or Jose Mourinho.
"If you do not get the results you are paid to get, it is inevitable people will turn against you and want a change. That is the scenario we are always working against."
"The owners gave me great backing last year because even when I lost six on the trot, I knew my job was not under threat," he said.
"I really appreciated it at the time and I would like to think I have paid them back handsomely since then.
"Maybe I am fortunate because I have never really been booed anywhere I have managed but I suppose it will come somewhere along the line.
"And when it does, it will be because of the expectations which have been raised by making this club better than it has ever been and the fans getting used to that sort of success.
"When it slips or slightly goes off the boil, the fans will show their displeasure - it is something you just have to accept."