By whom? The government has shown time and time again they aren't interested in policing attacks against labor (see: the toothlessness of the NLRB, the gig economy, weakening of unions/organizing, etc) so it wouldn't be them.
The companies aren't going to do it because LOL wut?
So how are you going to get labor to do that? And if they do, who do they take it to (because again, NLRB is underfunded and relatively weak)
The same issue as drug enforcement arises - how does it stay a profit center when those you punish are those that fund your election? It may be a profit center for the vault of the State, but it is very much not so for pockets of the campaigns. The reason why wage theft is inexplicably and reliably the biggest and yet the most overlooked shape of theft seems to me to be that one.
The companies aren't going to do it because LOL wut?
So how are you going to get labor to do that? And if they do, who do they take it to (because again, NLRB is underfunded and relatively weak)