Question about Austrian Economics in relation to worker mistreatment

I’m very interested in the idea of Austrian economics after viewing a lot of Mentiswaves content on Youtube. One question that I haven’t gotten a great answer to so far in exploring it is what is this philosophies answer to workers rights? I get that market incentives theoretically push companies to create a work environment that draws in employees, however when markets were much more free than today you had things like child labor, employees being shafted by the companies they worked for, horrible safety conditions in warehouses factories and mines, etc etc etc.

Is there a foolproof mechanism in this economic philosophy that ensures workers are treated properly, ethically, and fairly by their employers.