Des Moines Register: Principal Financial Group is laying off some Des Moines workers as the company shutters some of its lines of business. Principal issued a notice to the state last week, announcing plans to cut 25 positions by Oct. 11. The Des Moines-based financial services company, which employs about 6,300 workers in the metro area, announced in June that it would stop selling fixed annuities and life insurance to individual customers.