NEW YORK ( TheStreet) -- Jerome Kerviel, the rogue trader whose wild bets led French bank Societe Generale ( SCGLY) to a multi-billion dollar loss in early 2008, has been sentenced to three years in prison.

The prison term is, ironically, where he gets off easy, as it will likely take several lifetimes to pay his fine -- a whopping $6.7 billion.

The figure is equal to the amount it cost Societe Generale to unwind his speculative trades, which the bank claims were unauthorized. Kerviel claimed throughout his trial that the bank knew of his activities and chose to turn a blind eye so long as his bets made money.

It would take Kerviel 304,000 years to pay his dues, the Wall Street Journal estimates, assuming he gets paid minimum wage once he is freed from prison.
Jerome Kerviel
A Paris court sentenced former Societe Generale trader Jerome Kerviel, 33, to three years in prison.

Some may say it is not an unjustified punishment for a trader who systematically took unauthorized bets that were too risky and covered up his actions by creating fictitious trades. Others may argue that that Societe Generale got off too lightly for its role in the mess.

Societe Generale has paid a $5.5 million fine to France's banking commission for not adequately supervising Kerviel. But that may seem too low a price to pay for the kind of loose risk management practices that have hurt investors and contributed to destabilizing the financial system in recent years.

Of course, Kerviel could always get out of prison and write a best-selling book or two about how he beat the system, not unlike another famous rogue trader, Nick Leeson, on whom the film Rogue Trader is based.

Leeson infamously brought down Britain's Barings Bank in 1995 with risky bets on Japan's stock market that cost $1.3 billion, more than the bank's capital. Leeson was sentenced to a six and a half year term. But Singapore courts were equally critical of Barings' own risk management practices at the time.

The Paris court ruling on Kerviel's case has laid the blame squarely at the trader's feet. "The absence of proper supervision on the part of the bank should not have been interpreted as a tacit green light to engage in wild speculation," Judge Dominique Pauthe said, according to reports.

Kerviel's lawyers are appealing the verdict, arguing that Societe Generale should be held more accountable for their client's actions.

We'd like to know what you think about Kerviel's punishment. Vote in our poll and see what other readers of TheStreet think.

Was rogue trader Jerome Kerviel's punishment too harsh?

Yes -- The fine is excessive and unwarranted for the nature of his crime.
Yes -- Banks were needlessly rewarding risk and should be held more accountable.
No -- Such fines are necessary to prevent similar behavior.

-- Written by Shanthi Venkataraman in New York

>To contact the writer of this article, click here: Shanthi Venkataraman.

>To follow the writer on Twitter, go to http://twitter.com/shavenk.

>To submit a news tip, send an email to: tips@thestreet.com.
Disclosure: TheStreet's editorial policy prohibits staff editors and reporters from holding positions in any individual stocks.