A Barclays investment banker welcomed his unit's new class of summer interns with a scary sounding list of workplace rules, ominously titled "Welcome to the Jungle."
The email from analyst Justin Kwan was intended as a joke, according to a person inside Barclays, but the hyperbolic memo has attracted attention around the Wall Street because it plays into the common perception of a brutal work culture at banks.
The email obtained by CNBC runs through Kwan's "10 Power Commandments" for the bank's Global Power and Utilities interns.
Kwan writes the interns are expected to leave the office last every night and never take off their jackets at work. Kwan recommends bringing a pillow, as it eases the "very likely scenario" of sleeping under a desk.
Keeping an extra tie or scarf could come in handy, as associates may run out of napkins, Kwan said.