28 CFR 44.303 - Determination.
(a) Within 120 days of the receipt of a charge, the Special Counsel shall undertake an investigation of the charge and determine whether a complaint with respect to the charge will be brought before an administrative law judge specially designated by the Attorney General to hear cases under section 102 of the Act.
(b) When the Special Counsel decides not to file a complaint with respect to such charge before an administrative jaw judge within the 120-day period, or at the end of the 120-day period, the Special Counsel shall issue letters of determination by certified mail which notify the charging party and the respondent of the Special Counsel's determination not to file a complaint.
(c) When the charging party receives a letter of determination issued pursuant to § 44.303(b), indicating that the Special Counsel will not file a complaint with respect to such charge, the charging party, other than an officer of the Immigration and Naturalization Service, may bring his or her complaint directly before an administrative law judge within 90 days after his or her receipt of the Special Counsel's letter of determination. The charging party's complaint must be filed with an administrative law judge pursuant to the regulations issued by the Office of the Chief Administrative Hearing Officer codified at 28 CFR 68.1.
(d) The Special Counsel's failure to file a complaint with respect to such charge, before an administrative law judge within 120 days shall not affect the right of the Special Counsel to continue to investigate the charge or to bring a complaint before an administrative law judge during the additional 90-day period as defined by paragraph (c) of this section.
(e) The Special Counsel may seek to intervene at any time in any proceeding brought by a charging party before an administrative law judge.