Why does there need to be reform? Someone has brought a case and a determination is going to be made. What about that screams a need for reform.
As to how regularly, that is difficult to say. But regularly enough that most Courts have processes for declaring people vexatious litigants.
Except this isn't a court, it's a tribunal. And it follows different rules.
I read that these are some of the facts about Canadian Human Rights Tribunals:
1- No standard of evidence: the court can accept any claim it wants, it doesn't have to justify anything.
2- No right of cross-examination: the accused cannot confront his accuser in court.
3- The accused has to pay for his lawyer, the government assumes the cost of the accuser.
4- The tribunal can choose not to follow any rule it wants for the sake of "efficiency".
I'm not sure how accurate this is, but if it's true, something's rotten up north.
As for the "reform" bit, how about making sure stuff like this doesn't get this far? You shouldn't be able to sue somebody because they told a joke that hurt your feelings.