As a bargaining unit employee represented by a labor organization, you have the right to request representation from the labor organization (i.e. Union) at any investigative examination/interview where you reasonably believe the examination may result in disciplinary action being taken against you. You may make this request at any time prior to or during the interview. If requested, the agency may opt to: suspend questioning and grant your request then resume the interview; discontinue the interview; or offer you the choice to proceed with the interview without a Union representative or to forego the interview.

If you are being questioned, politely say, "I prefer to contact my Union Representative.  I respectfully decline to answer any questions until my representative is present".