1) AMERICAN FEDERATION OF GOVERNMENT EMPLOYEES

2) HEALTH ALLIANCE GROUP, INC.

3) INTERNATIONAL ASSOCIATION OF SHEET METAL, AIR, RAIL & TRANSPORTATION WORKERS

4) INTERNATIONAL BROTHERHOOD OF TEAMSTERS

5) KREINDLER & KREINDLER (FOR CERTAIN AMERICAN 5342 CLIENTS)

6) NATIONAL ASSOCIATION OF LETTER CARRIERS

7) NATIONAL ELECTRICAL CONTRACTORS ASSOCIATION

8) NATURAL PRODUCTS ASSOCIATION

9) NETJETS ASSOCIATION OF SHARED AIRCRAFT PILOTS

10) PBF HOLDING COMPANY LLC

11) SHEET METAL AND AIR CONDITIONING CONTRACTORS ASSOCIATION NATIONAL ASSOCIATION

12) SOUTHWEST AIRLINES PILOT ASSOCIATION

13) THE UNITED ASSOCIATION OF PLUMBERS, FITTERS, WELDERS AND SERVICE TECHS

14) TRANSPORT WORKERS UNION OF AMERICA AFL-CIO

15) VULCAN MATERIALS COMPANY