> Target 40 hours a week.

Not as easy as it sounds.

For me, doing 40 hours of actual work means staying 60h near the computer or in the office. I take too many breaks chatting with colleagues, or browsing HN. Well, this is my problem...

Plus my company measures "impact". Unfortunately, lot of work which has to be done is not impactful from management's perspective, and requires working more in order to generate impact and have something to say in your self-assessment. Of course, everybody in my team do work more than 40h, so you have to keep up in order not be in the 15% of low performers in line for the next layoff.