1. It's painless.
  2. Contributions are pre-tax and payroll deducted.
  3. Money in your account is tax-deferred.
  4. Benefits of dollar-cost averaging when making regularly scheduled investments.
  5. You can contribute more to a 403(b) than to an IRA.
  6. Quick and easy way to create a diversified portfolio with low-cost investment options.
  7. Reduces your current taxable income.
  8. Loans and hardship withdrawals for emergencies- where plan permits.
  9. You can transfer your money if you change jobs.
  10. Social Security won't be enough to cover all of your post retirement living expenses.