The by-law states that significant changes to work rules or compensation require a pilot vote.
they are playing fast and loose with the word “significant.”
it does not specify the format, LOA, TA, AIP, side letter….. the standard is significant change to rules or compensation

the abuse of that language like this essentially means you are never entitled to a pilot vote unless they feel like it.

now, it’s entirely possible they changed the by-laws.. but that’s a pretty big deal and there isn’t anything I’ve seen in meeting minutes.