Douglas Guy Brown hasn't been seen since he left for work early Wednesday morning, from his residence on First Street in the Village of Crysler.
But Brown's family noticed his car was back in the driveway at 1 p.m. that afternoon.
Brown is described as five-foot-seven, weighing 160 pounds, with blue eyes, greyish/white hair, a thin build, and a grey full mustache with beard stubble. He was last seen wearing glasses and paint-stained pants.
SD&G OPP officers, assisted by OPP Emergency Response Team (ERT), Canine Unit, and OPP Helicopter Unit members are currently at the scene searching the area.
If you know the whereabouts of Douglas Guy Brown, or have any information, call the OPP at 1-888-310-1122.