Iowa Admin. Code r. 11-44.2
To qualify to receive dues deductions, an association must have and may be required to maintain 100 members or more who are state officers or employees participating in either the centralized payroll system or the department of transportation payroll system. For purposes of meeting the minimum requirements, the association cannot count the enrollment of state officers or employees participating in similar programs that have been authorized by existing Iowa Code sections, by collective bargaining contracts, or by the appropriate governing authority. An association seeking to be qualified must supply officials in charge of each affected payroll system with an alphabetized, certified list of the state employees and their social security numbers for whom dues deductions are being requested. The type of dues being requested and the amount and frequency of the deduction must also be noted.
Iowa Admin. Code r. 11-44.2