Employers do not just need to have a Harassment Prevention Policy - they must use it to prevent harassment and deal with harassment when it occurs.
Employers are required to post a copy of the policy somewhere that it can be easily referenced by workers. It can be posted online as long as all employees have access to it.
Some strategies for implementing a Harassment Prevention Policy are...
~ adapted from Harassment Prevention: An employer’s guide for developing a harassment prevention policy, 2022 - Ministry of Labour Relations and Workplace Safety Occupational Health and Safety Branch, Saskatchewan
PLEA offers free online training on preventing and addressing workplace harassment.