Texas Occupations Code - OCC § 454.201. License Required; Use of Title

(A) the words “occupational therapy,” “occupational therapist,” “licensed occupational therapist,” “occupational therapist registered,” “occupational therapy assistant,” “licensed occupational therapy assistant,” or “certified occupational therapy assistant”;

(B) the letters “O.T.,” “O.T.R.,” “L.O.T.,” “O.T.R./L.,” “O.T.A.,” “L.O.T.A.,” or “C.O.T.A.”; or

(C) any other words, letters, abbreviations, or insignia indicating or implying that the person is an occupational therapist or an occupational therapy assistant;