With required choosing in place, employees have to state their preferences, and there is no default option. As compared with the usual opt-in approach (you are not enrolled unless you decide to fill out the forms), required choosing should increase participation rates. One company switched from an opt-in regime to active decisions and found that participation rates increased by about 25 percentage points.81827 ↱
Nudge
Improving Decisions About Health, Wealth, and Happiness
Richard H. Thaler, Cass R. Sunstein