No officer or employee elected or appointed in the city shall be interested, directly or indirectly, in any contract for work or material, or the profits thereof, in any services to be furnished or performed, for the city; and no such officer or employee shall be interested, directly or indirectly, in any contract for work or materials, or the profits thereof, or in any services to be furnished or performed, for any person, firm, or corporation operating interurban railway, street railway, gas works, electric light or power plant, heating plant, telegraph line, or telephone exchange, within the territorial limits of the city.
Ala. Code § 45-35A-54.30 (1975)