>>17844681He introduced the Fuhrerprinzip into labour law. He literally, legally made the owner of the company a tiny ass dictator.
He made unions, works councils and strikes illegal and centralized their role in the Deutschen Arbeitsfront. The DAF explicitly represented the NSDAP's political aims for the industry at large though, not the worker's interests though. All it inherited from labour unions were the financial assets the SA stole from them.
He limited freedom of occupation by 1935 and eventually abolished it completely. Forced labourers were imported from across the non-German parts of the Reich and slavery filled the bulk of the work force in forestry and quarrying. The lack of labour in agriculture was filled with German children, even.
The only thing Hitler actually expanded were environmental protection laws. The Green party doesn't want you to know this.