Commenting on the Board’s actions, chairman David Newton told bufc.co.uk: "This was a very difficult decision as Jason has been a good servant to the football club and is a true gentleman, however recent results have been poor and it was felt that the required changes to improve team performances and the squad were not being fully addressed.
"We thank Jason for his commitment to Boston United and we wish him and his family all the very best for the future.
"The recruitment process begins now."
Mr Newton added: "Although gates are down, the directors are very grateful for the support received so far this season.
"We are aware that it is difficult to watch a team that is not performing well. We are also acutely aware that it is financially very difficult for fans at the present time, particularly with the high number of recent home fixtures — and with Christmas looming.
"That said, we believe that the squad has shown that they are still working hard in games and we ask that the fans get behind the team to help the club through this difficult period."