If you are looking at the overtime and bonus money, you can't count on it. The hours you get are determined by how much mail they receive that day, so you may work less than 4 hours or end up extracting mail rather than doing data entry. Also you don't work 7 days a week all of the time.
Lastly, there is no guarantee that you will be picked to do data entry just because you pass the test. They may put you to work doing extraction (opening and sorting mail) instead which does not include any bonus pay.
Also there bonuses were drawings not absolute bonuses.
Pros: they do have work every 3 months or so
Cons: you can't count on working a full day
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