(Reuters) – Tens of thousands of striking teachers and education sector employees in the Canadian province of Ontario will be off the job again on Monday, the Canadian Union of Public Employees (CUPE) said on Sunday. Some 55,000 workers in the education sector in Ontario, the country’s largest province, went on strike on Friday after failing to reach an agreement with the provincial government on better pay and more frontline staff in schools. The walkout by teachers, educational assistants, secretaries and library workers, forced hundreds of schools to shut. The Toronto District School Board,…