Staff at Prudential Life Insurance took money from customers even after the company suspended new policy sales in February, when the misconduct came to light, NHK reported.
The freeze followed a series of cases in which employees improperly received money from customers, including one in which an employee defrauded a customer out of a large sum. The company halted new insurance sales in response to the disclosures.
The latest cases show that the suspension of sales did not stop staff from handling customers' money, NHK reported. The company has not said how many employees were involved or how much was taken.
Prudential Life has not commented publicly on the cases beyond the reported findings. NHK did not say whether the company has taken disciplinary action against the employees concerned.