Any hope of a tentative agreement between the University of Windsor and CUPE Local 1393 was dashed when negotiations abruptly ended Saturday.
Talks broke down over the key issues of job security, bumping and job evaluations.
University president Alan Wildeman said there was little movement on the issues.
"We were not able to reach common ground with CUPE 1393 and the mediator said, at this point, there is likely nowhere to go. So, we need to think that through," Wildeman told CBC Windsor's Gino Conte.
The strike is now in its 23rd day.
Dean Roy, president of CUPE Local 1393, which represents nearly 300 skilled trades and professional employees, blames the employer for the breakdown.
"We were moving on our proposals. We thought we were making reasonable compromises. It seemed we were bargaining with ourselves. The employer dug in its heels all week long, made no changes and eventually said they would have nothing to do and were not willing to make any moves," Roy said.
Roy now says students' semesters have been placed in jeopardy
"They don't care about us they, don't care about the students," Roy said of the university. "I don't know what to do."
A union membership meeting was held Sunday behind closed doors. Roy said members gave the union bargaining team a vote of confidence.
Roy said his members remain "rock solid" in their determination to get a fair agreement:
"I thought we were going to get a deal at one point, but that became evident that that was not going to happen," Roy said.
Wildeman was also optimistic when weekend talks began.
"We weren't there yet. That's all I can say. We need to put some thought to that," Wildeman said of the issues. "Certainly, CUPE 1393 needs to put some thought to it as well."