The role is designed to offer support to players in a number of areas, including mental health, career advice, education and training, lifestyle and general counselling.
Tigers chief executive Steve Gill is delighted that the former payer has returned to the club in a new role.
“It’s great news Paul is returning to the club as the player welfare manager,” he said.
“Steve Ball (Tigers Trust) and Paul Howell (club chaplain) have done a great job for us, and will continue to support Paul in this role.
“Paul’s experience and training will be very valuable to him and the club in this very important position. He came highly recommended, and knowing him from his previous times at the club I am sure he’ll be a good appointment for the club and its players.”
Jackson was also pleased to be back working for his old club again.
He said: “I’m delighted to be joining the Tigers again, it’s a great club and I have many happy memories of my playing days here.
“I’ve been working alongside the RFL in a player welfare capacity for a while now, and I’m really looking forward to getting to know the boys here and helping them as best I can.”