Following that, he became embroiled in something of a saga concerning Scott Brown after it was reported he had told the midfielder that he wanted to sell him.
The former Hibernian and West Brom boss spent most of Friday's press conference at the club's Lennoxtown training centre stressing that he did no such thing, as opposed to focusing on Sunday's trip to St Johnstone in the SPL.
Mowbray's exasperation about certain parts of his role came to the fore again as he said: "I said to you a few weeks ago, this job is not a job I enjoy.
"Do I have fun? No. I come to work, I work as hard as I can and I don't cut corners.
"I am as professional as I can be.
"I talk to my players - believe it or not - and put together a team to win football matches and just keep going."
Mowbray reiterated his stance on the Brown matter, saying: "The bottom line is I am a guy of integrity and honesty.
"My whole life is about the way I live it.
"I understand the vagaries of journalism but (if) you push me in to a corner and write something that just didn't happen - sometimes you have to make a stand. Fact.
"I don't like it when I see things printed that never happened.
"I think it's right that we take a stand against that.
"The daft thing about it is that there are so many grey areas.
"Do I talk to my players? Every day. It's my job is to talk to footballers.
"Was there a meeting at Christmas time telling him (Brown) he could go? Never.
"He didn't misunderstand me.
"It was a total mistruth and I think the club and myself have made that pretty clear.
"It's not disruptive because it's not true."
Meanwhile, the club have agreed a fee with Brondby for Denmark striker Morten Rasmussen, it is understood.
Personal terms have yet to be sorted, however, with no further developments now likely on the matter until next week.
St Johnstone boss Derek McInnes insists he has nothing to fear against the Hoops despite losing 5-2 at Parkhead earlier in the season.
He said: "We lost 5-2 at Parkhead and that day they had a lot of match-winners on show.
"They had the ability to pass and move the ball, they were athletic and had lots of energy.
"But although we lost against them, we took a lot of positives ourselves and in some ways we were the architects of our own downfall.
"We have to defend better and if we do that, who knows?"
Meanwhile, Denmark manager Morton Olsen has questioned the quality of the Clydesdale Bank Premier League ahead of Rusmussen's proposed transfer to Celtic.
Rasmussen, who will be eager to secure a place in Olsen's World Cup squad, will have the final say over whether he moves to Parkhead.
Olsen was quoted in the Daily Express saying: "The Scottish league is not better than the SAS Ligaen.
"They have some big clubs in Glasgow, but Celtic - who are internationally known - do not have the charisma they once had.
"There aren't the same finances in Glasgow or at Celtic as there were five years ago, but it is a club with huge tradition."