Ala. Code § 45-49-240.42
In Mobile County, all persons serving as supernumerary tax collectors as of April 30, 1986, shall receive a minimum annual salary payable in equal monthly installments from the county in the amount of seventeen thousand five hundred dollars ($17,500). Any supernumerary official who is paid less than the minimum annual salary shall hereby be paid in monthly installments such additional amounts from the county as will provide a minimum annual salary of seventeen thousand five hundred dollars ($17,500). The additional sum shall be deducted on a pro rata millage basis from the county and all subdivisions and agencies thereto with the exception of municipalities to which the person collecting ad valorem taxes is charged with the distribution of ad valorem taxes collected as provided by law.
Ala. Code § 45-49-240.42 (1975)