Having read history and knowing a bit about labor conditions before workers fought for rights, I find it odd to find someone who rejects the idea that class struggles exist, or that those with riches don't try to protect their exclusive access to those riches more often than not.
Specific workers may have had to fight for rights against specific employers, and this certainly happened quite a bit in the past. Conflicts of interest and adversarial games (in the game theory sense) can and do take place in many varied social contexts.
To abstract all of this into some generalized notion of "class struggle" that presumes that that "workers" as a category are at all times locked into a zero-sum struggle against all "bosses" is not just empirically false, but is actually a notion that has at times been calcified into a dogma used to justify incredibly destructive and oppressive behavior.
The prioritization of categories over human beings in the attribution of moral agency is a profound error.