Okay so how about this as the event, it's a little bit similar to the event you posted:
You take a sip of your <whatever drink you purchased>, then a <worker> sits on the stool next to you. The <worker> starts talking to you, saying that he has been short on workers lately. He soon notices that you are a <whatever rank nin you are> and quickly asks you if you would like to help him with his errands.
Options:
Option 1: Sure! I'll help!
Outcome: You lose three forest fights, gain somewhere between 100 and 1000 gold(depends on the job) and you can gain anywhere between 1 - 3 Gems.
Option 2: No thanks!
Outcome: The <worker> leaves and you continue to sip your <whatever drink you purchased>.
There can also be disasterous outcomes depending on the job you work, for example if the job is in a mine, it could collapse and kill you or injure you horribly. Or if you work at a stable, one of the creatures could scare away your creature and your creature returns in three days. Or you just get no gold or gems...
Of course there can be positive outcomes(along with the gold and gems), like you could find certain items like Shruiken, Kunai, or pick up a little gold while working. Also on a rare outcome, you could gain a little experience.
But this event could be really rare and could only happen if you buy a drink.
Also this event can only be for Chuunin and higher, because an Academy Student or Genin being offered a job doesn't seem realistic at all.