<p>The 90-100 hours a week IS what you will have if you work at a place like Goldman Sachs, CSFB, JP Morgan, Lazard, etc...again, your brother works in-house. Investment bankers (who work at firms) work an insane amount of hours.</p>
<p>Read any of their career websites' "A Day in the Life" profiles...they get in at 6-8 AM and leave at 9-11 PM. Not to mention another 6-8 hours on Saturdays.</p>