Alabama Code Title 11. Counties and Municipal Corporations § 11-43-143

(a) No person shall accept or hold any commission or employment as a firefighter or fireman in the service of the state or of any municipality in the state who participates in any strike or asserts the right to strike against the state or any municipality of the state, or be a member of an organization of employees that asserts the right to strike against the state or any municipality in the state knowing that such organization asserts such right.

(b) All firefighters serving the state or any municipality in the state either as paid firemen or as volunteer firefighters who comply with the provisions of this section are assured the right and freedom of association, self-organization, and the right to join or to continue as members of any employee or labor organization which complies with this section, and shall have the right to present proposals relative to salaries and other conditions of employment by representatives of their own choosing. No such person shall be discharged or discriminated against because of his exercise of such right, nor shall any person or group of persons, directly or indirectly, by intimidation or coercion compel or attempt to compel any firefighter or fireman to join or refrain from joining a labor organization.