The issue is being able to let go of workers for no reason, not the notice period itself, which BTW, every EU country has, Austria is nothing special here, quite the opposite. Do you feel this imbalance of power that you can be let go at any time for any reason is a fair to the workers in a so called socialist country?

Wouldn't be such a big issue if unemployment wouldn't be a pitiful 60% of your salary for ~3 months (yes it can be longer but you're then at the mercy of the system handler if they agree with the job search you're doing, otherwise they can also cut you off if you don't want to take hard jobs like warehouse work) .

>you can still sue immediately through the Arbeiterkammer

AK will only help you sue only in case of unfair dismissal which rarely happens because employers don't need to provide a reason for terminating you as long as they give you the 6-week-3-month notice. So long hours, burnout and hire-and-fire mentality is rampant among Austrian companies, but rarely talked about because it contradicts the "most livable country" narrative paid for by Austria to the Economist who runs that yearly campaign-ad.