Thank you.
To my colleague's point, I do believe it's important that when an individual comes forward with a complaint or a concern, they be given the adequate level of support required. I wonder if a friendly amendment would be accepted that might strengthen this so that all parties could agree to it.
At the end, where it says, “participate in an investigation...relating to an occurrence of harassment or violence in the work place”, it could continue to say, “unless the employee making the complaint requests the workplace committee participate”.
What this would do is to free up the person who is making the complaint to have the additional support should they want it, but then they don't have to take it, which would maximize freedom.