Your workplace violence hazard assessment should also target harassment.
Federal OHS laws (Bill C-65) require employers to perform a hazard assessment of not only workplace violence but also harassment. Rather than conduct separate assessments, you should do one, combined survey covering both violence and harassment. The best way to do that is to use your current workplace violence hazard assessment template but expand it to include the organizational, cultural and other external risk factors that must be addressed as part of the workplace harassment hazard assessment. Here’s a template you can adapt to conduct such an assessment.