Estate planning attorneys put in place the documents that decide what happens to your property, your minor children and your medical care: wills, revocable and irrevocable trusts, powers of attorney, health care directives, beneficiary designations and business succession plans.
The point of the work is largely to keep your family out of court later. A will still goes through probate; a properly funded trust usually does not. Powers of attorney and health care directives matter while you are alive, and are the documents families most often wish they had.
Before you hire
See also probate and elder law for what happens after death and for long-term-care planning.