Seek the advice of an attorney if a settlement offer is made, since the terms of the offer can almost always be improved. If nothing more, the settlement often can be structured so it's non-taxable. Non-competition clauses and other unfavorable terms that are buried in many settlement agreements can be eliminated as well. Even if the company doesn't voluntarily provide it, there are other ways to gain the verbal equivalent of such a recommendation. Few would be willing to spend a tremendous amount of time trying to solve the world's problems without the hope of a monetary recovery.
Some exceptions apply, especially when a lesson can be taught and money obtained at the same time.
Unless a suit or other administrative filing is made on a timely basis, your rights may be lost forever. The deadline typically is one year from the wrongful act, which may be sooner than the date of notice of termination. This is especially true when there were prior acts of harassment or discrimination. So if you're seriously considering taking action, do so now. You may lose your opportunity by waiting too long.