If retirement money isn't an issue for the bride, the husband may ask her to waive rights to his benefits, protecting his nest egg in the event of a divorce. Make sure you notify your plan administrator and sign the proper forms. If you have different ideas, make sure that you spell it out in writing with your plan administrator, have your new spouse sign off on it and include your plans in your prenup and in your will. Review what you've accumulated, and decide how you want it divided should you divorce or die. If your children are older teens or young adults, you also have the option of leaving it to them outright.
Life insurance is designed to replace lost income.
Look at how much each of you is bringing to the new household and have sufficient insurance to replace those amounts. Examine your existing policies and determine if you need to change your beneficiaries in light of your new circumstances. If you pay alimony or child support, consider a policy that would replace that money if you died. If you receive child support and life insurance on your ex was not part of the settlement, run the numbers on getting a policy now. While many couples would share the money, there are other options.