The workplace incident happened on April 8, 2016 at a worksite near Lucky Lake when a worker fell 27 feet through the roof of a structure.
He suffered fractures to an ankle and forearm.
Rocksteady Builders pleaded guilty on Jan. 10 in Moose Jaw provincial court for failing to ensure workers were using a fall protection system where they could fall three or more metres.
The company was fined a total of $14,000. One other charge was stayed.
OHS regulations stipulate employers must have a written fall protection plan and ensure workers are using a fall protection system when they could fall three metres or more.