Same in my office in the UK, I got asked if I was not taking enough breaks or doing work outside of work hours as I was doing more than they expected and my manager was worried about me burning out, but having a chill atmosphere and a nice place to hang out and chill in the office just means that I can be more productive and happier at work so it's a win-win... A lot of HR types don't realise that it takes a nice office in both material and culture to make people productive and just go for the former which has the lower effect of the two when used alone.