Frequently asked questions What are the medical marijuana laws in Massachusetts? Here is an overview of the medical marijuana laws in Massachusetts: 2012 – Massachusetts Medical Marijuana Initiative was voted in by 63%. Ballot Question 3, “An Act for the Humanitarian Medical Use of Marijuana” is approved. This means that qualifying patients, physicians, caregivers, healthcare professionals or medical marijuana dispensaries and treatment centers are not punished by the state for using, recommending or distributing marijuana for medical purposes. 2016 – Recreational marijuana is legalized with the passing of Question 4.