To apply for survivor’s benefits, you must notify Social Security immediately after your loved one dies. Remember, this cannot be done online. In most cases, the funeral home will be the one to report the death to Social Security through a death certificate. For this reason, it’s essential to provide your loved one’s Social Security number to the funeral home if you want them to complete the report. To apply for survivor’s benefits, here are some Social Security documents you may need to complete the application: Widows/Widowers or Surviving, Divorced Spouse's Benefits, Child's Benefits, Mother's or Father's Benefits, Lump-Sum Death Payment, Parent's Benefits. Depending on your situation, find the appropriate form and fill it out as best as possible. Then, either bring the documents to your local Social Security office or mail them.