The nation’s largest freight railroads and 13 rail unions successfully concluded the last round of national (multi-employer) bargaining in April 2012. More than 132,000 rail employees are covered by the agreements reached in that round.
| Union | Number of Workers(rounded) |
Percent of Total(rounded) |
| United Transportation Union (UTU) | 38,140 | 29 |
| Brotherhood of Maintenance of Way Employes (BMWE) | 25,100 | 19 |
| Brotherhood of Locomotive Engineers & Trainmen (BLET) | 24,970 | 19 |
| Brotherhood Railway Carmen (BRC) | 9,870 | 7 |
| International Association of Machinists and Aerospace Workers (IAM) | 7,170 | 5 |
| Brotherhood of Railroad Signalmen (BRS) | 7,130 | 5 |
| Transportation Communications International Union (TCU) | 6,700 | 5 |
| International Brotherhood of Electrical Workers (IBEW) | 5,580 | 4 |
| National Conference of Firemen and Oilers (NCFO) | 2,620 | 2 |
| Yardmasters Department – Div. of UTU (YDM) | 1,740 | 1 |
| American Train Dispatchers Association (ATDA) | 1,530 | 1 |
| Sheet Metal Workers’ International Association (SMWIA) | 1,070 | 1 |
| International Brotherhood of Boilermakers, Blacksmiths, Iron Ship Builders, Forgers and Helpers (IBB) | 500 | 1 |
| Total | 132,120 |
NOTE: Some railroads/unions are in national handling for limited issues.