I have two comments.
First of all, it's not required in Bill C-257 because section 87.4 has it and has laid it out. There are examples of how section 87.4 works.
Second, on the issue of balance, section 87.4 says that we cannot have a labour dispute unless we agree to a maintenance of activities.
The term “replacement workers” is a different kind of language because in that case the union has to prove they've actually hired them for the purposes of undermining the trade union.
So on one hand, we can't even have a labour dispute unless we sign a maintenance of activity. On the other hand, we can't challenge the replacement workers under the existing code unless we first prove the motive of the company. There is a blatant imbalance right there.