10 pages. "A large majority picks one of two more expensive plans, even when, for all possible spending realizations, lower costs are more likely in the cheapest plan. Employees who do not choose the low-cost plan overpay for health insurance by nearly $1,700 in expectation.... About one-third of employees forgo matching contributions, and a large majority saves below reasonable benchmarks.... People who spend too much on health insurance are 23% more likely to forgo matching contributions than are people who choose the low-cost plan."

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