§ 84. Practice before the commissioner; immunity of witness. 1. All
hearings before the commissioner, or an officer or employee of the
department specially authorized to conduct an investigation or hearing,
shall be governed by rules to be adopted and prescribed by the
commissioner. And in all investigations, inquiries or hearings the
commissioner, or an officer or employee of the department specially
authorized to conduct an investigation or hearing, shall not be bound by
the technical rules of evidence.

2. In any investigation or inquiry by or upon any hearing before the
commissioner, or an officer or employee of the department specially
authorized to conduct an investigation or hearing, the commissioner, or
the officer or employee conducting the investigation or hearing, may
confer immunity in accordance with the provisions of section six hundred
nineteen-c of the code of criminal procedure.