Workers Credit Union has donated $100,000 to expansion of the emergency department at the Leominster campus of UMass Memorial HealthAlliance - Clinton Hospital.

The expansion will boost the number of emergency treatment rooms to 37 from 24 and include new triage areas, more privacy for patients and secure space for patients with behavioral health issues.

Workers Credit Union is based in Fitchburg with branches in Acton, Chelmsford, Gardner, Groton, Lancaster, Leominster, Lunenburg, Orange, Townsend, Westford and Athol.