It's not in the same universe as a threat! The only negative thing the letter says is that unionizing will mean the CWA has exclusive representation rights. The

It's not in the same universe as a threat! The only negative thing the letter says is that unionizing will mean the CWA has exclusive representation rights. They don't suggest that there will be any negative effects on wages or employment practices or retention. I'm not sure what the "it" you're referring to is, but I'm pretty confident it's possible to continue a unionization drive indefinitely or drop it and restart it later. Restrictions come into play only at later steps in the process; until the CWA gets enough union authorization cards to petition for an election or ask for voluntary recognition, there's no deadlines or cooldown periods involved.