I wonder how much of Otto's benevolence is being played up in the article (discouraging weekend working, tolerance of gigantic strategic failures). If he truly does what he's saying, it sounds like a very pleasant and productive place to work.
There was also a documentary about his life-ruining business but the big "benefactor" just found covering slogans to disguise what it is really about: To rip people off. When his other businesses work the same, than it is a big benevolence show. Of course the German government bought the show (why not, our politicians are of the same kind!).
There are other logistic companies that still have far better working conditions. So it is possible.
The whole construction of Hermes is made this way, that the conditions of the workers are bad and Hermes itself can wash their hands of it. Even the small companies in between this "chain of irresponsibility" are complaining of bad conditions and many go bankrupt for Otto's billions.
There are also contractors that admitted that they had to cheat the tax system to stay afloat. Many have gone bankrupt and the people involved are often left without social security. That's all inside the "System Hermes".