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 union ended strikes in January
( z1 end :ARG0 ( z2 union ) :ARG1 ( z3 strike ) :time ( z4 date-entity :month 1 ) )