The importance of managers to clubs has increased during the coronavirus pandemic, according to the League Managers Association (LMA).
LMA chief executive Richard Bevan said managers have taken on "greater responsibility" because of Covid.
The costs of sacking managers "also has an impact" in what are financially tough times for clubs, Bevan added.
He added that dismissing managers comes with a greater "long-term" price "if they fail to address systemic organisational issues, in the hope of a short-term fix".
'Recognising value of stability'
Two Premier League managers have lost their jobs this season - Frank Lampard at Chelsea and Slaven Bilic at West Bromwich Albion - although others have been seen to be under pressure.