To embed, copy and paste the code into your website or blog: Recreational use of cannabis or marijuana is now legal in New York State. On March 31, Governor Cuomo signed into law the Marihuana Regulation and Taxation Act. The legalization of cannabis will have significant short and long-term effects on all facets of society in the state, including policies and procedures in the workplace. Here’s what employers need to know right now. Lawful Cannabis Use Effective March 31, 2021, adults aged 21 or older can lawfully possess, use, and transfer (without compensation) up to three ounces of cannabis and up to 24 grams of concentrated cannabis. Eligible adults are also able to cultivate up to three mature and up to three immature cannabis plants.