I guess this is why lots of startups use 'contractor' services because things like cleaning are not their core competency but what you describe could apply to many early stage startups. In that stage many companies are in a vulnerable position and death is likely. What you describe would only further reduce the chances of the company surviving. If all we have are entrenched businesses that can afford these additional expenses we end up in stagnation over time. Maybe thats one part of the reason why we don't see many big shot companies coming out of Europe today? I don't know.
On the other hand, €170 a month seems very reasonable. From a quick search it seems like in the US the average monthly healthcare cost covered by an employer is around $1,100 or around $13,200 per year. This is in additional to the portion that employees may have to pay. This varies depending on employer and plan.
How would pensions work? That is actually what I really wanted to know about. Pensions would be an additional added cost and it seems like only the big established companies can afford to offer it.