The Just Cause Eviction Law is Chapter 186A of the Massachusetts General Laws. See Section 6. It went into effect on August 7, 2010. The formal name of the law is “Tenant Protections in Foreclosed Properties”.
For more information on state and federal laws about tenants rights after foreclosure see Foreclosures on MassLegalHelp and Information for Foreclosures (including post foreclosure evictions) on MassLegalServices.org:
For more information on evictions see Evictions.