Mr Haggerty has served as the society’s President since April 1998 and has been a director of the society for 21 years.
Commenting on his decision, Mr Haggerty said: “It’s been a privilege and honour to have been associated with Chelmsford Star for 21 years and to have been President since 1998.
“I am very proud of our achievements; not just our dramatic improvements in trading, but also of our governance reforms, environmental achievements and social initiatives including our Community Card.
“I will miss my colleagues in the society and my wider connections within the Movement, but I think the time is right for both myself and my family to move on to the next chapter.”
Chelmsford Star Chief Executive Tony Gudgeon commented: “Terry has been an inspiration in this society and he should, quite rightly, be proud of his achievements. He will be missed, but equally we respect his decision.”
The society’s directors will choose a new President following April’s election.