The handy "Department of Infrastructure" web site says it all: a new list of upcoming strikes....More......
MARCH 8 from 9 A.M. to 5 P.M.: Trenitalia
MARCH 22 for 24 hours: local public transportation (These 24-hour strikes in Milan usually run along these lines: from 8:30 A.M. 'til 3 P.M., travel possible 'til 6 P.M., when the strike starts up, again, and continues until the end of service. Hours vary in each city.)
MARCH 25 from 9 A.M. to 5 P.M.: Trenitalia (again)
APRIL 8 for four hours to be arranged locally: public transportation (again, but only one union currently is listed as participating, so the strike may not be a total shutdown of service...but I wouldn't count on it).
This far in advance, there is a chance that the strikes will be cancelled...but usually at the last minute, so it's still difficult to make plans. Or make them, then change them back.
I hardly can say my usual "Enjoy!," can I?