Public Works Collective Bargaining Agreement 2025 to 2027 (PDF) Public Works Collective Bargaining Agreement 2020 to 2024 (PDF) Public Works Collective Bargaining Agreement 2015 to 2019 (PDF) Public Works Collective Bargaining Agreement 2011 to 2015 (PDF) Public Works Collective Bargaining Agreement 2007 to 2011 (PDF)