The 22-year-old has signed an extended contract, which will keep him at Ewood Park until June 2017.
“I’m over the moon,” said Jason, who is celebrating his 10th year with the club.
“I love playing here and I have done since I started. To extend my stay again is another step in the right direction.
“I have worked hard to improve all aspects of my game and I feel my performances this season reflect that. I will keep pushing myself to get better and to help get results for the team.”
Jason was quick to pay tribute to manager Gary Bowyer, who he has worked under whilst rising through the ranks.
“I obviously know Gary very well,” he added. “He has instilled a lot of confidence and belief in me, and you need that to play to your potential. He has given me the freedom to show what I can do and for that I am very grateful.”
A graduate of Rovers’ renowned Academy, which Jason joined at the age of 12, the versatile midfielder has established himself as a regular starter since making his first team debut in January 2011.
He has gone on to play 94 games for the club, but still awaits his first Rovers goal. Impressive performances at club level have also been recognised on the international stage, with Jason captaining England at the 2011 FIFA Under-20 World Cup and collecting 11 caps for the Under-21s.
He has started every league game for Rovers this season and picked up the man-of-the-match award in the last two Ewood encounters.