29 CFR 1602.26: Additional reporting requirements.

The Commission reserves the right to require reports, other than that designated as Report EEO-3, about the membership or referral practices or other procedures of labor organizations, whenever, in its judgment, special or supplemental reports are necessary to accomplish the purposes of title VII, the ADA, GINA, or the PWFA. Any system for requirement of such reports will be established in accordance with the procedures referred to in section 709(c) of title VII, section 107 of the ADA, section 207(a) of GINA, or section 104 of the PWFA, and as otherwise prescribed by law.