[noncoml]

Not the OP and not supporting his opinion, but these where not workers they fired, they were senior managers, and I believe it's not illegal.

I guess the OP means that they should be fired for failing to do their job, ie. "convince" the workers to not unionize.

[peoplefromibiza]

that's an old argument though, where does it stops?

If someone put those managers in charge of "convincing" workers to not unionize, aren't they responsible as well?

And who gave the order to put someone to "convince" them, haven't they failed too?