Simultaneous interpretation is one of the most cognitively demanding tasks a professional does in a workday. Interpreters listen, comprehend, translate, and speak in another language continuously, often for an audience whose decisions depend on every word. Research on conference interpreting consistently shows that interpreter accuracy starts to decline after approximately 30 minutes of continuous simultaneous work. The professional response to that fact is the interpreter team.
What team interpreting actually is
A team consists of two or more qualified interpreters who work in coordinated rotation. The active interpreter renders speech in real time. The passive interpreter monitors the rendering, takes notes, looks up unfamiliar terminology, manages documents and exhibits, and is ready to provide a correction or substitution if needed. Typically the pair switch active and passive roles every 20 to 30 minutes.
Why solo interpreting fails on long assignments
Without a second interpreter, the lone working interpreter accumulates fatigue. Symptoms appear as small omissions, summarizing where they should be rendering verbatim, missing rapid exchanges, or simply asking for more frequent breaks. None of those are catastrophic in a short setting; in a multi-hour trial, deposition, or arbitration, the accumulation of small omissions becomes a record problem and can give opposing counsel grounds to challenge testimony.
When team interpreting is recommended
Professional standards from the National Association of Judiciary Interpreters and Translators (NAJIT) and the International Association of Conference Interpreters (AIIC) recommend team interpreting for:
- Continuous interpreting assignments of one hour or longer (per NAJIT)
- Multi-day depositions and arbitrations
- Trials of more than a half-day
- Conferences and panels in simultaneous mode (AIIC standard: teams of at least two per language)
- Any complex technical or medical setting where terminology load is high
Federal courts often require team interpreting for trial proceedings of any meaningful length, and many state courts follow the same practice for trials and multi-day hearings.
Booking teams
Team scheduling needs to be confirmed at the time of booking, not added on the day of the assignment. Two certified interpreters in a specific language pair, available on the same date and location, take more lead time to source than one. AMS schedules teams routinely for long depositions, trials, arbitrations, and conferences. When booking a multi-hour or multi-day assignment, ask explicitly for a team.