From Canadian Pacific’s web site:

​​​​​​​​Despite Canadian Pacific’s best efforts to reach an agreement with Teamsters Canada Rail Conference-Running Trades (TCRC), the union has provided official notice of its intent to strike the company in the event there is not a negotiated settlement. This group represents more than 3,000 active locomotive engineers and conductors at CP.

A work stoppage can occur as early as 12:01 a.m. on February 15, 2015.

Read the rest at CP