Operating Engineers Local 66 Benefit Fund. IMPORTANT - This information summarizes the requirements for the Benefit Fund. It does not replace or amend the Summary Plan Description. To obtain additional information concerning the Benefit Fund call (412)968-9750. Or email pfund@oe66.com do not include your Social Security number in the email. Operating Engineers Local 66 Benefit Fund was created to assist members during periods of unemployment within the industry. A member that is eligible for payments from the Benefit Fund will receive a monthly check.