Today’s seniors are living longer and spending more time in retirement than ever before, and many are worried their savings won’t last, according to a report form the Society of Actuaries.

Among the findings:

• Four in 10 retirees (38 percent) and half of pre-retirees (49 percent) say they are much more concerned about their financial situation in retirement than they were prior to the economic downturn.

• Twenty-three percent of retirees feel they have to go back to work, and two-thirds of pre-retirees (64 percent) indicate they now feel they need to work longer. However, working longer may not be feasible for many people approaching retirement due to job losses and the difficulty of finding work in the current tough job market. More than four out of 10 people end up retiring earlier than planned.

• Both retirees and pre-retirees expressed concern about maintaining the value of their savings and investments with inflation (58 percent of retirees very or somewhat concerned, versus 71 percent of pre-retirees).

• Half of retirees and more than six in 10 pre-retirees expressed concern about having enough money to pay for adequate health care (49 percent of retirees, 67 percent of pre-retirees), and their income varying from changes in interest rates (52 percent of retirees, 62 percent of pre-retirees).