Jobs are useful for getting experience points, special items and money. Choosing the job to perform should be a strategic decision based on what the ultimate goal is for doing the job.
Jobs are important for it helps to level up quicker. Early levels don’t require a large amount of experience points in order to move up and so doing jobs with the most experience points is a fast way to move up the ladder. If acquiring special loot items is the goal research what other players have found out in terms of which jobs yield what items. Remember that the job may have to be performed more than one time to yield the loot.
Doing jobs for money is pretty self-explanatory. If acquiring large sums of cash is the ultimate goal, choose jobs that have larger payouts and repeatedly perform them. I believe this is the reason why I picked MOGUL. I earn a lot of cash.
GREED IS GOOD? In Mafia Wars, yes.

