Hmmm...
Here are a few. A friend of mine and I realized that certain people we knew and managers we knew were wearing tasselled loafers. This seemed kind of strange to us, being technical types. We always considered them "sissie shoes", but we observed these loafer wearers and discovered some amazing things about them. We had several theories about what upper management looked for to review and promote their employees, but we had to prove our theories. (Being the scientific types we are of course.

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So...We went out and each bought a pair of loafers. We started to see results right away. I scored better on my quarterly review than I ever had before. My friend renegotiated his employment agreement. I survived a layoff which chopped my whole division. (A dot com division). We began to see tangible, predictable outcomes (and incomes) related directly to wearing loafers and following the behavior of the other loafer wearers.
What do supervisors (especially non-technical ones) really know about your job? Well essentially, very little. They observe what they see with their eyes and hear from you and others, but they believe what they see more than anything else.
So, what do they see?
They see what time you come in. (On Time is good.)
They see if you take a lunch. (Taking a lunch is good.)
They see if you work so hard that it makes others look bad. (A no-no)
They notice if you take care of yourself. (Bottled water good, Pop not good, Health Club good, Donuts not good, Sleep good, working through the night not good.)
They notice if your teeth are straight and whitened. (Good)
They notice if you greet people in the morning. (Good)
They notice if you play golf. (Once there was a layoff at a company I worked for. Nobody in the golf league got laid off.)
They notice if you take time out for family birthday parties, school events, and celebrations. (Good)
They notice if you are arrogant and nobody can get along with you. (Bad)
They notice if your work looks impressive. (Good)
They notice if you build others up. (Good)
They notice if you are honest. (Good)
They notice if you have a definition and a back bone. (Good)
In short, they notice the visible. Your after hours work makes them feel guilty, because they don't do that. If they spend extra time for work, it is to go with a client to a ball game or something. They value relationships, events, and transactions, not time, sweat, or pain.
Make sure you place at least some of your efforts on the visible things. You are already probably killing yourself with the invisible (but necessary) things.
LoaferMan - There is no practice life. This is it. (Billy Crockett)