There have been reports of unrest at Old Trafford from the start, with Jose Mourinho's divisive tactics doing little to help, but Matic insists the club is working together.
"We are all united," the Serbian said. "When we win we are all together and when we lose we are all together.
"It's not true what the media are writing. We are working hard and we will continue like this.
"The Manchester United name obligates us to be professionals and try to turn the situation as soon as possible and this is exactly what we are doing.
"He's [Mourinho] a great person. He's a different man outside the job and off the pitch.
"He does have a lot of pressure though because everyone expects him only to win. When we don't win everyone is waiting to see his reaction. He likes to win and when we don't win we are hiding from him at the training ground.
"He's happy when he's winning but when we lose, like every manager, he wants us to do better. He tries to find a way to be winning as soon as possible.
"One thing is for sure that since he's been in the Premier League he's changed a lot in the league. The Premier League has become more interesting with him."