Official Rules
Appendix A: ELIGIBLE UNIONS
AAAA — Associated Actors & Artistes of America  | LIUNA — Laborers'  | 
AEA — Actors' Equity Association  | MEBA — Marine Engineers  | 
AFA-CWA — Association of Flight Attendants  | MLBPA — Major League Baseball Players Association  | 
AFGE — American Federation of Government Employees  | MLSPA — Major League Soccer Players Association  | 
AFM — American Federation of Musicians  | MM&P — Masters/Mates/& Pilots  | 
AFSA — American Federation of School Administrators  | NABET-CWA — Broadcast Employees & Technicians  | 
AFSCME — American Federation of State/County & Municipal Employees  | NALC — Letter Carriers  | 
AFT — American Federation of Teachers  | NATCA — Air Traffic Controllers  | 
AGMA — American Guild of Musical Artists  | NFFE-IAM — National Federation of Federal Employees  | 
AGVA — American Guild of Variety Artists  | NFLPA — Professional Athletes  | 
ALPA — Air Line Pilots Association  | NNU — National Nurses United  | 
APWU — American Postal Workers Union  | NPMHU — Mail Handlers  | 
ARA — American Radio Association  | NTWA — Taxi Workers  | 
ATDA — American Train Dispatchers Association  | NWSLPA — Women's Soccer League Players  | 
ATU — Amalgamated Transit Union  | OPCMIA — Plasterers' & Cement Masons'  | 
BAC — Bricklayers  | OPEIU — Office & Professional Employees  | 
BCTGM — Bakery/Confectionery/Tobacco Workers & Grain Millers  | PASS — Professional Aviation Safety Specialists  | 
BRS — Brotherhood of Railroad Signalmen  | PLATE — Plate Printers  | 
CSEA — California School Employees Association  | PPMW-CWA — Printing/Publishing & Media Workers  | 
CWA — Communications Workers of America  | RWDSU — RWDSU  | 
FLOC — Farm Labor Organizing Committee  | SAG-AFTRA — SAG-AFTRA  | 
GIAA — Italian American Actors  | SIU — Seafarers  | 
GMP — Glass/Molders/Pottery/Plastics & Allied Workers  | SMART — Sheet Metal Workers  | 
HFIU — Heat & Frost Insulators & Allied Workers  | TCU-IAM — Transportation Communications International Union  | 
IAFF — Fire Fighters  | TNG-CWA — The Newspaper Guild  | 
IAM — Machinists & Aerospace Workers  | TWU — Transport Workers  | 
IATSE — Theatrical Stage Employees  | UA — Plumbing & Pipe Fitting  | 
IBB — Boilermakers  | UAW — Auto Workers  | 
IBEW — Electrical Workers  | UFCW — Food & Commercial Workers  | 
IFPTE — Professional & Technical Eng  | UMWA — Mine Workers  | 
IRONWORKERS — Iron Workers  | UNITE HERE — UNITE HERE  | 
IUANPW — Allied/Novelty & Production Workers  | USW — Steelworkers  | 
IUEC — Elevator Constructors  | UURWA — Roofers  | 
IUE-CWA — Industrial Union of Electronic Workers  | UWUA — Utility Workers  | 
IUOE — Operating Engineers  | WGAE — Writers Guild of America East  | 
IUPA — Police  | WNBPA — Women's National Basketball Players' Association  | 
IUPAT — Painters  | 
Appendix A: ELIGIBLE UNIONS
AAAA — Associated Actors & Artistes of America  | LIUNA — Laborers'  | 
AEA — Actors' Equity Association  | MEBA — Marine Engineers  | 
AFA-CWA — Association of Flight Attendants  | MLBPA — Major League Baseball Players Association  | 
AFGE — American Federation of Government Employees  | MLSPA — Major League Soccer Players Association  | 
AFM — American Federation of Musicians  | MM&P — Masters/Mates/& Pilots  | 
AFSA — American Federation of School Administrators  | NABET-CWA — Broadcast Employees & Technicians  | 
AFSCME — American Federation of State/County & Municipal Employees  | NALC — Letter Carriers  | 
AFT — American Federation of Teachers  | NATCA — Air Traffic Controllers  | 
AGMA — American Guild of Musical Artists  | NFFE-IAM — National Federation of Federal Employees  | 
AGVA — American Guild of Variety Artists  | NFLPA — Professional Athletes  | 
ALPA — Air Line Pilots Association  | NNU — National Nurses United  | 
APWU — American Postal Workers Union  | NPMHU — Mail Handlers  | 
ARA — American Radio Association  | NTWA — Taxi Workers  | 
ATDA — American Train Dispatchers Association  | NWSLPA — Women's Soccer League Players  | 
ATU — Amalgamated Transit Union  | OPCMIA — Plasterers' & Cement Masons'  | 
BAC — Bricklayers  | OPEIU — Office & Professional Employees  | 
BCTGM — Bakery/Confectionery/Tobacco Workers & Grain Millers  | PASS — Professional Aviation Safety Specialists  | 
BRS — Brotherhood of Railroad Signalmen  | PLATE — Plate Printers  | 
CSEA — California School Employees Association  | PPMW-CWA — Printing/Publishing & Media Workers  | 
CWA — Communications Workers of America  | RWDSU — RWDSU  | 
FLOC — Farm Labor Organizing Committee  | SAG-AFTRA — SAG-AFTRA  | 
GIAA — Italian American Actors  | SIU — Seafarers  | 
GMP — Glass/Molders/Pottery/Plastics & Allied Workers  | SMART — Sheet Metal Workers  | 
HFIU — Heat & Frost Insulators & Allied Workers  | TCU-IAM — Transportation Communications International Union  | 
IAFF — Fire Fighters  | TNG-CWA — The Newspaper Guild  | 
IAM — Machinists & Aerospace Workers  | TWU — Transport Workers  | 
IATSE — Theatrical Stage Employees  | UA — Plumbing & Pipe Fitting  | 
IBB — Boilermakers  | UAW — Auto Workers  | 
IBEW — Electrical Workers  | UFCW — Food & Commercial Workers  | 
IFPTE — Professional & Technical Eng  | UMWA — Mine Workers  | 
IRONWORKERS — Iron Workers  | UNITE HERE — UNITE HERE  | 
IUANPW — Allied/Novelty & Production Workers  | USW — Steelworkers  | 
IUEC — Elevator Constructors  | UURWA — Roofers  | 
IUE-CWA — Industrial Union of Electronic Workers  | UWUA — Utility Workers  | 
IUOE — Operating Engineers  | WGAE — Writers Guild of America East  | 
IUPA — Police  | WNBPA — Women's National Basketball Players' Association  | 
IUPAT — Painters  |