Whenever a charge is filed by or on behalf of a person claiming to be aggrieved, or by a member of the Commission, alleging that an employer, employment agency, labor organization, or joint labor-management committee controlling apprenticeship or other training or retraining, including on-the-job training programs, has engaged in an unlawful employment practice, the Commission shall serve a notice of the charge (including the date, place and circumstances of the alleged unlawful employment practice) on such employer, employment agency, labor organization, or joint labor-management committee (hereinafter referred to as the “respondent”) within ten days, and shall make an investigation thereof. Charges shall be in writing under oath or affirmation and shall contain such information and be in such form as the Commission requires. Charges shall not be made public by the Commission. If the Commission determines after such investigation that there is not reasonable cause to believe that the charge is true, it shall dismiss the charge and promptly notify the person claiming to be aggrieved and the respondent of its action. In determining whether reasonable cause exists, the Commission shall accord substantial weight to final findings and orders made by State or local authorities in proceedings commenced under State or local law pursuant to the requirements of subsections (c) and (d). If the Commission determines after such investigation that there is reasonable cause to believe that the charge is true, the Commission shall endeavor to eliminate any such alleged unlawful employment practice by informal methods of conference, conciliation, and persuasion. Nothing said or done during and as a part of such informal endeavors may be made public by the Commission, its officers or employees, or used as evidence in a subsequent proceeding without the written consent of the persons concerned. Any person who makes public information in violation of this subsection shall be fined not more than $1,000 or imprisoned for not more than one year, or both. The Commission shall make its determination on reasonable cause as promptly as possible and, so far as practicable, not later than one hundred and twenty days from the filing of the charge or, where applicable under subsection (c) or (d), from the date upon which the Commission is authorized to take action with respect to the charge.
In the case of an alleged unlawful employment practice occurring in a State, or political subdivision of a State, which has a State or local law prohibiting the unlawful employment practice alleged and establishing or authorizing a State or local authority to grant or seek relief from such practice or to institute criminal proceedings with respect thereto upon receiving notice thereof, no charge may be filed under subsection (a)  by the person aggrieved before the expiration of sixty days after proceedings have been commenced under the State or local law, unless such proceedings have been earlier terminated, provided that such sixty-day period shall be extended to one hundred and twenty days during the first year after the effective date of such State or local law. If any requirement for the commencement of such proceedings is imposed by a State or local authority other than a requirement of the filing of a written and signed statement of the facts upon which the proceeding is based, the proceeding shall be deemed to have been commenced for the purposes of this subsection at the time such statement is sent by registered mail to the appropriate State or local authority.
In the case of any charge filed by a member of the Commission alleging an unlawful employment practice occurring in a State or political subdivision of a State which has a State or local law prohibiting the practice alleged and establishing or authorizing a State or local authority to grant or seek relief from such practice or to institute criminal proceedings with respect thereto upon receiving notice thereof, the Commission shall, before taking any action with respect to such charge, notify the appropriate State or local officials and, upon request, afford them a reasonable time, but not less than sixty days (provided that such sixty-day period shall be extended to one hundred and twenty days during the first year after the effective day of such State or local law), unless a shorter period is requested, to act under such State or local law to remedy the practice alleged.
The provisions of chapter 6 of title 29 shall not apply with respect to civil actions brought under this section.
Any civil action brought under this section and any proceedings brought under subsection (i) shall be subject to appeal as provided in sections 1291 and 1292, title 28.
In any action or proceeding under this subchapter the court, in its discretion, may allow the prevailing party, other than the Commission or the United States, a reasonable attorney’s fee (including expert fees) as part of the costs, and the Commission and the United States shall be liable for costs the same as a private person.