Complex sentence: New Era has had two labor situations in its 88-year history: in 2001 with the Communications Workers of America and in 2007/8 with the International Brotherhood of Teamsters.
Split into simpler sentences: New Era has had two labor situations in its 88-year history. One in 2001 with the Communications Workers of America, and another in 2007/8 with the International Brotherhood of Teamsters.