The reason for the separation/divorce is irrelevant. You are definitely entitled to a portion of the funds that reflects what was added to that fund during the term of the marriage. Example: Say he has been contributing to the fund for 12 years, and you are married for 10. You would be entitled to 50% of the funds, including gains and losses, deposited in the last 10 years, but not the first two years (when you were not married). So in my example, you get 50% of 10/12th of the fund. There is clear law that retirement funds are community property.
Answered on Nov 01st, 2011 at 10:40 AM