Mind how you handle your student loans aspiring lawyers, or you could find your debt hurting more than your bank accounts. Loans could derail your career before it can start.

That is the message in a decision by a panel of five New York judges denying one would-be lawyer, Robert Bowman, admission to the bar because his debt approached half a million dollars.

“His application demonstrates a course of action amounting to neglect of financial responsibilities with respect to the student loans he has accumulated since 1983,” the judges wrote in a decision issued late last week. They went on to criticize his “dealing with the lenders.”

The decision, which comes as students borrow ever larger sums to cover the cost of higher education, blocked Mr. Bowman’s effort to have his bar application reconsidered after it was initially denied earlier this year. His long struggle to enter the legal profession was the subject of an article in The New York Times in July.