Our History

HDEAA is a strong independent union. Our membership includes Educational Assistants and Communicative Disorder Assistants, both permanent and casual, working at the Halton District School Board. In December of 1995 the EAs of the Halton District School Board voted to form a certified Association. Certification was granted on December 11th, 1995 by the Ontario Labour Relations Board. After seventeen months of negotiations, the first Collective Agreement between the then Halton Board of Education and the Halton Instructional Assistants Association was signed on September 23rd, 1997.

Our Structure and Partners


Our core roles and responsibilities are framed in the Ontario Labour Relations Act. HDEAA, as a union, is governed by its Executive Committee, directed by the Constitution, and supported by HDEAA’s committees.


HDEAA is part of the CEAO coalition (Coalition of Educational Assistants of Ontario). HDEAA, Dufferin-Peel Educational Resource Workers (DPERWA) and the Waterloo Regional District School Board Educational Assistants Association (WRDSB EAA) are independent unions representing educational support staff. We meet regularly to facilitate best practise within our own unions and collaborate on problem solving. 


The Education Workers' Alliance of Ontario – Alliance des travailleurs de l'éducation de l'Ontario (EWAO-ATEO), is a collaborative council of 7 labour unions and 19 bargaining units (H.D.E.A.A., D.P.E.R.W.A, E.A.A., S.E.I.U. Local 2, Unite Here Local 272, A.E.F.O. Local 103, and A.P.S.S.P.

It was founded in response to the Government of Ontario’s decision to create a two-tiered collective bargaining process (bargaining both centrally and locally). HDEAA bargains at the central table (with the government) on behalf of its members as one of the 7 unions that makes up EWAO-ATEO.
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Our Core Principal

“Grounded in principals of solidarity, unity, dignity and democracy, integrity, trust, fairness and equality”