2023 Massachusetts General Laws ch. 23D sec. 21 – Collective bargaining agents; consent

2022 Massachusetts General Laws ch. 23D sec. 21 – Collective bargaining agents; consent

2020 Massachusetts General Laws ch. 23D sec. 21 – Collective bargaining agents; consent

2019 Massachusetts General Laws ch. 23D sec. 21 – Collective bargaining agents; consent

2017 Massachusetts General Laws ch. 23D sec. 21 – Collective bargaining agents; consent

2016 Massachusetts General Laws ch. 23D sec. 21 – Collective bargaining agents; consent

2015 Massachusetts General Laws ch. 23D sec. 21 – Collective bargaining agents; consent

2014 Massachusetts General Laws ch. 23D sec. 21 – Collective bargaining agents; consent

2013 Massachusetts General Laws ch. 23D sec. 21 – Collective bargaining agents; consent

2009 Massachusetts General Laws ch. 23D sec. 21 – Collective bargaining agents; consent