28 CFR § 42.107 - Conduct of investigations.
(a) Periodic compliance reviews. The responsible Department official or his designee shall from time to time review the practices of recipients to determine whether they are complying with this subpart.
(b) Complaints. Any person who believes himself or any specific class of individuals to be subjected to discrimination prohibited by this subpart may by himself or by a representative file with the responsible Department official or his designee a written complaint. A complaint must be filed not later than 180 days from the date of the alleged discrimination, unless the time for filing is extended by the responsible Department official or his designee.
(c) Investigations. The responsible Department official or his designee will make a prompt investigation whenever a compliance review, report, complaint, or any other information indicates a possible failure to comply with this subpart. The investigation should include, whenever appropriate, a review of the pertinent practices and policies of the recipient, the circumstances under which the possible noncompliance with this subpart occurred, and other factors relevant to a determination as to whether the recipient has failed to comply with this subpart.
(d) Resolution of matters.
(1) If an investigation pursuant to paragraph (c) of this section indicates a failure to comply with this subpart, the responsible Department official or his designee will so inform the recipient and the matter will be resolved by informal means whenever possible. If it has been determined that the matter cannot be resolved by informal means, action will be taken as provided for in § 42.108.
(2) If an investigation does not warrant action pursuant to paragraph (d)(1) of this section, the responsible Department official or his designee will so inform the recipient and the complainant, if any, in writing.
(e) Intimidatory or retaliatory acts prohibited. No recipient or other person shall intimidate, threaten, coerce, or discriminate against any individual for the purpose of interfering with any right or privilege secured by section 601 of the Act or this subpart, or because he has made a complaint, testified, assisted, or participated in any manner in an investigation, proceeding, or hearing under this subpart. The identity of complainants shall be kept confidential except to the extent necessary to carry out the purpose of this subpart, including the conduct of any investigation, hearing, or judicial proceeding arising thereunder.
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