A demand for records can swing the value of a case fast. If key papers never show up - or show up late - you can have a harder time proving damages, pinning down who knew what, or challenging the other side's story. In an injury claim, that can mean weaker settlement talks, more expense, or evidence gaps that hurt the outcome.

A subpoena duces tecum is a court-backed order requiring a person or organization to produce documents, records, or other tangible evidence. Unlike a subpoena that mainly orders someone to appear and testify, this one focuses on things: medical charts, payroll records, incident reports, phone logs, photographs, maintenance files, and similar materials. It can be directed to a party in the lawsuit or to a nonparty that has relevant evidence.

In practice, this tool matters because a lot of the best evidence sits in someone else's file cabinet or database. For an injured worker or crash victim, a subpoena duces tecum may help prove lost wages, prior complaints about unsafe conditions, or the extent of treatment. The other side may object if the request is too broad, seeks privileged material, or invades privacy, so wording and timing matter.

In Massachusetts, subpoenas for documents are governed largely by Massachusetts Rule of Civil Procedure 45, as amended in 2015. Records produced through a subpoena can shape discovery, settlement, and even how fault is divided under the state's modified comparative fault rule, where a claimant who is more than 50% at fault cannot recover.