Is there an exception to the "pension as marital property" question?

If you began your employment before your marriage and earned rights to your pension before your marriage, and then continued with that same employment after your marriage, continuing to earn rights to your pension, the part of the pension earned when you were not married may be nonmarital or separate property and the part of the pension earned when you were married may be marital property.

For example: The husband has worked for Microsoft for 12 years and has been participating in the pension plan for all 12 years. After working for Microsoft for 5 years he married a co-worker. They decided to divorce after being married for just three years. When examining this scenario, the wife would be entitled to a portion (typically half) of the pension benefit for the three years they were married. A present value would be assigner to that portion and then divided accordingly.