Jol is under pressure over Fulham's slow season start.
Mackay said: "People have an opinion in football and these days with the social media aspect it is highlighted even more.
"But Martin is an experienced manager who has a group who have just gone and beaten Everton on Tuesday night. It just shows you the strength of the team.
"They are a club who have been in the Premier League for a good number of years and they are very stable."
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