Police say the man's family complained to police last month about concerns of physical abuse by staff at the Carewest Garrison Green facility.
The police Elder Abuse Response Team investigated the allegation along with Alberta Health officials.
Police say the three staff have been fired and were arrested Wednesday.
Maria Dumo, Angelina Borga and May Casimero each face one charge of common assault.
They have been released from custody and are to appear in court April 23. (The Canadian Press)
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