(a) After 1983. Work done after 1983 by an employee in the employ of a religious, charitable, educational, or other organization described in section 501(c)(3) of the Code which is exempt from income tax under section 501(a) of the Code is covered as employment unless the work is for a church or church-controlled organization that has elected to have services performed by its employees excluded (see § 404.1026). (See § 404.1059(b) for special wage rule.)

(b) Before 1984. Work described in paragraph (a) of this section which was done before 1984 is excluded from employment. However, the exclusion does not apply to work done during the period for which a form SS-15, Certificate Waiving Exemption From Taxes Under the Federal Insurance Contributions Act, was filed (or was deemed to have been filed) with the Internal Revenue Service.