Not necessarily. However, if the contract is for your payment of another person’s debt (§ 725.01, and § 687.0304, Fla. Stat.), if it concerns real estate (§ 689.01, Fla. Stat.), if it lasts more than one year (Chapter 670-680, Fla. Stat.), or if it transfers property after death (i.e. a will) (§ 732.502, Fla. Stat.), it must be in a signed writing.