In the case of retirement savings, for example, a nudge that prompted new employees
to indicate their preferred
contribution rate
to a workplace retirement - savings
plan yielded a $ 100 increase in employee
contributions per $ 1 spent on implementing the program; the next most cost - effective strategy, offering
monetary incentives for employees who attended a benefits fair, yielded only a $ 14.58 increase in employee
contributions per $ 1 spent on the program.