A plaintiff who brings several actions in the same or in different courts against the same defendant upon causes of action which might have been joined in one action, or who brings separate actions against defendants who might have been joined, shall recover costs in one action only, unless the court, after a hearing, otherwise orders.
Mass. Gen. Laws ch. 261, § 7
Unnecessary actions
Official source: Massachusetts Legislature. Reproduced from public-domain Massachusetts statutes; confirm against the official source for the current text. Not legal advice.