Thomas Ganger will also spend three years on probation following his release.
The 65-year-old was found guilty of sexual assault following a trial last September.
Ganger was convicted of making an unwanted sexual advance on a now 30-year-old man in January 2011 after the two had been drinking together at a trade show in Red Deer.
The judge said while this was not a "major" sexual assault, it was still disturbing and embarrassing for the victim.
Also on HuffPost