Ohio Revised Code Title XXXVII. Health Safety Morals § 3776.11

(C)(1) No person except a registered environmental health specialist in training shall use the title “registered environmental health specialist in training” or the abbreviation “E.H.S.I.T.” after the person's name, or represent self as a registered environmental health specialist in training.

(2) No environmental health specialist in training shall engage in the active practice of environmental health for a period exceeding six years from the date that the environmental health specialist in training's registration was initially issued.  During the period that a person is engaged as an environmental health specialist in training, the person shall undertake the duties of an environmental health specialist in training solely under the supervision of a registered environmental health specialist in good standing.  Such supervision is a condition for the advancement of an environmental health specialist in training to an environmental health specialist.