Voting will take place today at Confederation College's campus in Fort Frances for its part-time support staff.
The workers are voting on whether to join the Ontario Public Service Employees Union.
College workers spokesperson Richard Belleau says joining OPSEU could lead to benefits workers currently don't enjoy.
"At lot of issues surrounding job security," say Belleau, "working from one contract to the next and regular hours are not consistent. They would be looking to improve those sorts of things."
The certification vote is part of a province-wide campaign by OPSEU to unionized part-time employees at all of Ontario colleges.
Voting is scheduled to wrap up at the end of this month.