Sec. 15. If the township trustee's office is located in the township trustee's personal residence, unless the policy adopted under section 9 of this chapter provides otherwise the township trustee may hire only one (1) employee who is a relative. The employee:
(1) may be hired to work only in the township trustee's office;
(2) may be in the township trustee's direct line of supervision; and
(3) may not receive total salary, benefits, and compensation that exceed five thousand dollars ($5,000) per year.