Regulations implementing the Pension Protection Act of 2006 made target-date funds a qualified default investment alternative (QDIA) in 401(k) plans. This means that when a plan uses target-date funds as the default investment along with a qualified automatic contribution arrangement (QACA), plan fiduciaries receive “safe harbor” protection and plans gain exemption from annual nondiscrimination testing requirements and “top-heavy” rules... [534 word article, April 2011]