The results of this year's survey show a system still holding strong despite years of turmoil. But will the weaknesses soon be exposed?

The Justice Department says the companies have been engaged in a multiyear conspiracy to exchange information about the wages and benefits of workers at poultry processing plants to drive down employee competition in the marketplace.

The coordinated federal investigations primarily targeted alleged schemes involving the payment of illegal kickbacks by laboratory owners in exchange for the referral of patients by medical professionals working with fraudulent telemedicine.

"Financial institutions must document the reasons that a rollover recommendation is in the best interest of the retirement investor and provide that documentation to the retirement investor," says WTW report.