Corporate Dirty Tricks

I've been reading a Traveller module where a corporate exec refused to pay the PCs based on a vague non performance clause which I thought was interesting. It got me wondering what are some other corporate diry tricks:<br /><br />1. espionage is obvious<br /><br />2. sabotage of competitors is obvious<br /><br />3. using vague non performance clause to fire and not pay was mentioned.<br /><br />4. using strict interpretation of vague company rules or policies to fire anyone considered a problem<br /><br />5. My Dad quit a good computer programming job joined the Air Force and went to fight in Viet Nam when his company fired a man months from retirement and gave the job to the president's son.<br /><br />Others?