Section 25-31-1-20 - Exempt persons(a) An employee or a subordinate of any person who holds a certificate of registration under the provisions of this chapter is exempt from the provisions of this chapter if the practice of the employee or subordinate does not include responsible charge of design or supervision.(b) This chapter does not require registration for the purpose of practicing engineering by an individual or a business:(1) on property owned or leased by that individual or business unless the engineering practice involves the public health or safety, or the health or safety of the employees of that individual or business;(2) for the performance of engineering which relates solely to the design or fabrication of manufactured products; or(3) that is registered as a landscape architect under IC 25-4-2 and while the individual or business is engaged in the practice of landscape architecture planning the use of land or water.(Formerly: Acts 1935, c.148, s.20; Acts 1947, c.262, s.9; Acts 1951, c.125, s.1; Acts 1961, c.277, s.10; Acts 1969, c.279, s.7.) As amended by Acts1982 , P.L. 154, SEC.103; P.L. 23-1991, SEC.27; P.L. 1-1993, SEC.198; P.L. 215-1993, SEC.20.