A survey by Aviva plc shows that 57 percent of Americans expect to work past their normal retirement date, a higher proportion than in any other of the 10 countries in the study.

Aviva’s study was conducted in the United States, Europe and Asia Pacific markets. It also  found that Americans are more engaged in retirement planning than residents of the other nine countries, through such measures as increasing retirement savings and reviewing retirement plans, officials said.

Also the highest of any country surveyed, 35 percent of Americans plan to put more money into retirement savings in the next 12 months, and 44 percent of Americans have reviewed their retirement or pension plans in the past 12 months.

“Although they are concerned about whether they have saved enough and how they will maintain their standard of living in retirement, there is evidence more Americans are taking action to do something about their retirement worries,” said West Des Moines-based Aviva USA President and CEO Chris Littlefield in a press release. “It’s clear more Americans are prepared in the long term to work beyond the normal retirement age and plan to continue to save more for retirement.”

The survey, which has been conducted annually since 2004, also covers the United Kingdom, France, Italy, Spain, Poland, Ireland, China, India and Singapore. Officials interviewed 1,000 respondents aged 18 and over in each market, with the exception of China, where 2,000 adults were surveyed.