Patients were supposed to use the money from Anthem to then pay the health system, which didn't always happen.

Buying Willis Towers might enable Aon to overtake Marsh & McLennan Cos. as the world's largest brokerage by revenue.

Sponsors poured cash into funds in 2017 and 2018, but 2019 may be different.

Significant changes are being made in benefit offerings, with employers seeking to provide workers with more options in a tight job market.