Interesting, in Brazil all the companies in the chain are liable in a labor-related law suit. Before the 2017 Labor Reform[1], frivolous law suits by former employees were a billionaire market because it used to be a risk-free gamble - after the reform the litigant is liable for exaggerated claims and there was a 46% drop in labor cases[2].
When I look at any market where the labor code is excessively protective, I see high unemployment rates specially among the young - Brazil, Spain, France[3]... I don't know about causation but clearly there is a correlation between employee over-protection and unemployment rates. I think it is the law of unintended consequences[4] in action: the legislator intention was good (protecting employee) but the net result is negative.
[1] https://www.jonesday.com/en/insights/2017/12/brazilian-labor...
[2] https://www.capital-ges.com/an-insider-view-of-the-brazilian...