In the negotiations over the past two years, it is understandable that table 2 union members had no hesitation using their right to strike, which they had obtained on December 16, 1998. So, in a perfectly legal context, the union is exercising its means of pressure by holding rotating strikes across the country since January 18.
The negotiations happened over the last 3 years.
( z1 negotiate :time ( z2 before :op ( z3 now ) :duration ( z4 temporal-quantity :quant 3 :unit ( z5 year ) ) ) )