I'm gonna copypaste what I said somewhere else ITT:

You can only get so far with liberal democracy, trade unions, and worker-owned cooperatives, because, while those things are nice, and certainly better than feudalism, you still fundamentally have a bourgeois class-dictatorship where all the so called "rights" of the worker are granted by the bourgeoisie and enforced through their class's monopoly on violence. They decide when rules can be bent, broken, changed, or ignored. The police and the military exist purely to enforce their ownership over the means and conditions of production.

TL;DR Worker Owned Co-Ops exist embedded in a capitalist economy and are subject to its laws