Ala. Code § 36-1-4.4
The policies adopted by the state Comptroller for deductions from the salaries of state employees or groups of state employees for employee organizations shall provide that the deductions for membership dues and voluntary contributions shall be made based on membership lists and forms provided by the employees' organization. Such lists are to be corrected and revised annually according to procedures to be established by the state Comptroller. Membership dues and voluntary contributions currently authorized shall continue on an annual basis for the current yearly period and for each succeeding yearly period unless the employee revokes the deduction in writing within 10 days of the next succeeding yearly period. Voluntary contributions may be revoked by giving a 30-day notice in writing. New authorizations shall be permitted on a monthly basis according to procedures to be established by the state Comptroller. Upon leaving state service whether by death, retirement, termination, resignation, leave of absence or other means, payroll deduction of dues and authorized voluntary deductions shall cease. When an employee returns to state service from an approved leave of absence or other temporary leave, payroll deductions and voluntary contributions shall resume unless the employee revokes the deductions in writing. When amounts have been correctly deducted and remitted by the state Comptroller, the state Comptroller shall bear no further responsibility or liability for subsequent transactions.
Ala. Code § 36-1-4.4 (1975)