A day after two health-care workers were stabbed in the emergency department of a Halifax hospital, the head of the province's largest union said her members have been sounding the alarm about unsafe conditions for a long time.

A Halifax man is facing charges including attempted murder after health workers were attacked at the Halifax Infirmary's emergency room on Wednesday.

Three employees at the Halifax Infirmary hospital have been injured by a patient, including two who were stabbed, according to sources.