I'm a librarian who loves anime, manga, and reading a wide variety of genres.
Tatsuta initially wanted to work at Ichi-F for three reasons: a desire to do good, curiosity, and the pay was supposed to be good.
Considering that it took over a year for him to actually work at Ichi-F, and the pay wasn't as good as he'd originally thought, it took about three months of working at Ichi-F to make anything approaching a normal living. And then there's the belief that others have that Ichi-F workers are literally tainted. Landlords are reluctant to rent apartments to them, and some car rental places turn them away.