Well, cycling to work in work clothes is the obvious thing to do, isn't it? Not many people in Austria would bother to change clothes or demand a shower at the work place. Well, there might be the occasional guy who decides to change his T-shirt or leaves his jacket at work in the summer. But after all we're just cycling to work and not speeding in a race. No need for a complete transformation or to show off.
Note that the gardener in the upper left picture rides a company bicycle (company being the City of Vienna). This is really untypical and the first time I have seen something like that, so I tried to find out more about it -- and voilà, I found an old article (from May 1999) that mentions such efforts by the city council to try to make their employees set their cars aside. Ten years later, however, I would like to know if they are still at it and if it has made an impact on peoples' choice of transport.