From the 1960s Rod Settle worked in the criminal justice system in Australia and Papua New Guinea. His various roles in the criminal justice system included running an emergency accommodation house for released Victorian prisoners; Stipendiary Probation and Parole Officer, Melbourne; Senior Social Worker with the Children's Courts, Darwin; Associate to the Hon. Mr Justice Raine (Supreme Court); Education Officer with the Advanced Training Section of the Victoria Police and teacher / researcher with the School of Law and Legal Studies at LaTrobe University. In 1993 Settle completed his PhD through the Department of Legal Studies, LaTrobe University.
In addition to the works listed on AustLit Settle also wrote The Criminal Justice Machine (1984), Police Power : Use and Abuse (1990), Police Informers : Negotiation and Power (1995), 'TASOL' : Individual Responsibility Under Criminal Law (1998) and No-Man's Land : Working Inside the Criminal Justice System (2000), as well as designing 'Offender', a game simulating the criminal justice system in Australia.