Rod Reddy took on a player-coach role at Barrow in 1987. Barrow earned promotion to Division One but that campaign saw Barrow manage only one league win and suffer a club record 90-0 defeat at Leeds. Reddy was sacked and Denis Jackson took over as a caretaker coach for the rest of 1989/90
After a successful coaching stint with Cumbria, Reddy took on the reserve grade coaching duties position Brian Smith at St George. He was appointed Smith’s successor as coach in 1996 but embraced the Super League concept and walked out on his former club before a match was played. After sitting out the 1996 season along with fellow St. George Super League loyalist Gorden Tallis while Super League successfully lodged its appeal, Reddy was the inaugural coach of the Adelaide Rams in 1997’s Super League season.
After a poor start to the 1998 season, Reddy and his coaching staff were sacked by the Rams' administration, and the club folded at the end of the year.
Reddy was the assistant coach at the Wests Tigers under head coach Jason Taylor but departed the club in 2015 being sacked by Jason Taylor in a cleanout. On 25 July 2019, Reddy labelled Wests player Robbie Farah the "Most selfish player I have ever been involved with while either playing the game or coaching bar none". Reddy went on to say "Well we were right he went to Souths and played reserve grade and that Wests Tigers team at the moment is a reserve grade team with 4/5 NRL players in it and Farah is not 1 of them". The comments came in the wake of Farah speaking about Reddy and Taylor to the media days earlier when Farah said "At the time I was told by him and 'Rocket' Reddy, I’d finish my career in reserve grade. But I’m here now – 'JT' is coaching reserve grade".[3][4]
Reddy was awarded Life Membership of the St. George Dragons in 1981.[6]
On 20 July 2022, Reddy was named in the St. George Dragons District Rugby League Clubs team of the century.[7]