Klein must run other jobs, from collecting on loans, (earning him the name, "the Enforcer"), to mob work.
Using computers to devour bits of data, banks are learning to avoid risks, provide better service and collect on delinquent loans.
And the hardball tactics some lenders use to encourage borrowing or to collect on loans breed both lawsuits and criticism from consumer groups.
That in turn makes collecting on bad loans a bit awkward.
News reports suggested that his murder might have been related to efforts to try to collect on bad loans related to the Yakuza.
Demand drafts are also a popular method for lending institutions to attempt to collect on overdue loans.
Like most other banking companies, they were helped by a wider spread between rates they paid for deposits and rates collected on loans.
The government and private lenders can sue in order to collect on loans.
There is, however, at least one industry that is thriving: collecting on loans.
Before the invasion, some gulf banks were already having difficulty collecting on loans to Kuwaiti businesses and individuals and to Iraq.