A bit too easy too get. Playing as France, I cancelled the telecoms industry on my first turn, then ended my turn. Immediately received the achievement on my next turn.
Ha. Well there is some argument to be made that this is political commentary 
It triggers if there is more than one simultaneous strike… maybe It should also require a certain threshold of union membership… or maybe even 3 strikes at once…
maybe just a time limit? Have two strikes for n turns?
Yes indeed, that would be a good fix