Pinhas works in private practice in Verdun, Quebec as well as in long-term and palliative care at a community health centre and is a member of the board of directors at the Order of Psychologists of Quebec and the regional health board for southwest Montreal.
She and Thomas Mulcair met as teenagers when she visited Quebec from France in order to attend a cousin's wedding. She immigrated to Canada soon after and the couple married in 1976 when they were both 21.
- Smith, Joanna (April 9, 2012). "Thomas Mulcair’s wife Catherine a psychologist and political confidante". Toronto Star. Retrieved April 21, 2012.
- Levy-Ajzenkopf, Andy (March 26, 2012). "New NDP leader strongly backs Israel". Canadian Jewish News. Retrieved April 21, 2012.