CERTAIN CONTRACTS NOT REQUIRED TO BE IN WRITING.
Tex. LOC. GOV'T Code § 271.062.
in effectA contract executed under Section 271.054 or 271.056 is not required to be in writing if the work to be performed under the contract:
(1) is legal services;
(2) is to be done by the regular salaried employees of the issuer; or
(3) is to be paid for as the work progresses.