I'm aware of the standard line.
De facto responsibility can't be transferred from the employees solely to the employer to match the legal responsibility assignment in the employer-employee contract. A thought experiment showing this is to consider an employer and employee cooperating to commit a crime. The employee can't argue that they sold their labor, and are not responsible. The law correctly applies the principle of legal and de facto responsibility matching. Both are criminous
While many socialists supported worker coops in the interim, an economy of exclusively worker coops comes more so from the classical laborists such as Proudhon.
@general