[jseban]

They try to make you commit to additional unofficial work/projects for which you get no extra time or resources. If you fail and burn out, that's just you being a bit "overambitious", and if you succeed, they will just make if official. In that way, they can avoid owning up to any failures and only take responsibility for the successful ones. So you have to be a bit careful in casual conversations with the boss about ideas and possible improvements.