Originally Posted by
CPH-Flyer
Traditionally, the collective bargaining agreements expired and were renegotiated in the spring time, as employees are mainly allowed to take strike action in connection with this point of the process most strikes have occurred in the spring period. This has not been an effect of the weather, but rather an effect of the process.
It’s not a case of “either A or B”. Rather it’s a matter of whether B and C correspond to a strike being more likely to hit at a given time of year and day of week in a particular year than in a prior year.