The sentence was handed down before the Home Circuit Court Thursday afternoon.
Miller was convicted on December 2 on one count of accessory before the fact of murder and one count of accessory after the fact of murder in the 2008 killing of Mr. Chambers.
During Thursday's sentencing hearing, Miller's attorney Bert Samuels urged the judge to sentence him to the minimum 15 years stipulated for the offence of Accessory Before the Fact of Murder under the Criminal Justice Suppression Act.
The second offence of Accessory After the Fact of Murder attracts a maximum sentence of two years in prison.
When the sentence was handed down, Miller received 38 years nine months for count one and 18 months for the second count of Accessory After the Fact of Murder.
The sentences are to run concurrently, therefore he will serve 38 years and nine months in prison.
Prosecutors accused Miller of plotting the murder of the JUTC chairman at the JUTC depot in Spanish Town, St. Catherine on June 27, 2008.
A former member of the Clansman gang was called as the chief prosecution witness.
The witness testified that a contract was taken out on the life of Mr. Chambers.
In passing down the sentence, Justice Georgiana Fraser said she found the murder of Mr. Chambers was pre-mediated.
The judge said Miller ordered the killing while staying in the shadows.
She said his killers sprayed bullets in a public space that could have injured other persons.