The Ontario Public Service Employees Union, which has protested at several Liberal events this year over its bargaining with the province, is planning a rally for Friday.
The union says the protest will coincide with the start of the annual general meeting and members will be demonstrating against the Liberal government's plan to sell a majority of Hydro One.
On Saturday, a coalition of groups are planning a protest to coincide with Premier Kathleen Wynne's speech inside the Blue Mountain Resort.
The Elementary Teachers' Federation of Ontario says it will send busloads of members to Collingwood to protest the government's bargaining with teachers, including the province's use of back-to-work legislation at three boards for high school teachers.
The Canadian Union of Public Employees will also be part of the rally, highlighting what it calls the "lowest public program spending in Canada" which it says has led to hospital closures and long wait lists for child care and long terms care among other issues.
The Ontario Secondary School Teachers Federation, the English Catholic Teachers Association and Ontario Federation of Labour will also be among those taking part in the "Stand up for Ontario" rally.
At the annual general meeting the Liberals will be voting on Wynne's leadership and attending sessions on how to help federal counterparts during the upcoming election and looking ahead to the 2018 provincial election.