143.13 EXEMPTIONS.
   Exemptions for the requirements of this chapter shall be:
(a)    Any employer of less than twelve persons; the members of the immediate family of an employer shall not be included in determining the number of employees;
(b)    Any religious organization or institution whose membership or service is limited to persons of a single faith;
(c)    Any private organization having a purely social or fraternal purpose;
(d)    Any type of employment where religion, religious creed or nationality would usually and normally be considered an essential qualification of employment.
(1963 Code §143.13)