Here is a post I made a while ago:
Many schools have 2 retirement plans, the defined benefit and the defined contribution. The defined benefit pays a certain percentage of the average of your last five years wage times the number of years of credit you get. The defined contribution is where the employer pays you a percentage of your salary into the account, and then you decide where to allocate the assets.
I have given some thought about the pros and cons of these programs. It is a critical decision since it is almost always binding.
Here are my thoughts on these, and I would appreciate any other feedback on this. I am not a new employee, but the OP is, and new people should have the benefits of the wisdom/mistakes of those they follow.
Defined Benefit:
Pro
The risk of investment performance is on the state.
You dont have to worry about 'what to invest in'.
Con
You are less able to move because you may lose retirement benefits (one 30 year job usually is better than 3 ten year jobs).
Salary compression. If you can not move, you may not be able to get salary adjustments. (A coworker with 30 years service makes a full 1/3 less than I make and I am a newly tenured- associate professor).
When you die, the payments stop (or you take a lower payment for the longer of the employee or the spouse's life)
Takes a long time to Vest (for you to qualify for the benefits). If you leave or are denied tenure before the vesting period, then you dont get the state's share of the retirement. They will return the portion you paid in, usually.
There is sometimes a max benefit... after 30 years or so, the only increase you get is from the increase in your wage.... if you put in 50 years, and the plan was 2% of salary, they still wont pay 100% of salary. SO after a while you find that you are working for only 40 cents on the dollar. you could have made 60% or close by retiring. Want to work for 40% extra?
Defined Benefit
Pros.
Mobility. You get the amount you put in plus the state's match (vesting is usually only 1 year, no more than 5).
Since you are mobile, you can move to keep up with the salary level in your field.
Since you vest before the tenure decision, even if you are denied, you take the assets with you.
You can experience superior returns relative to the state's formula.
You retire on the assets that you have accumulated. When you die, the remainder of your wealth goes to your heirs.
Every year you work, you increase the assets in the plan. The longer you work, the more there is to live on or leave to your heirs later.
Cons
the risk of plan performance (or non-performance) lies with you.
Other issues
In either plan, you still have the ability to save in a Roth IRA. You also likely have access to a 457 defferred compensation plan. That allows you to contribute an additional 15000.
Personally, I have the 403. I will switch to the Roth 403 when the next school year starts. I never liked the idea that i went up for tenure before the vesting period was up. I did not want to be in a position that they could fire me and I d lose the benefits of the contribution.
Here is a similar link:
http://chronicle.com/forums/index.php/topic,35342.0.html