Maryland Labor and Employment Section 4-317

      (a)      A court may not grant injunctive relief in a case that involves or grows out of a labor dispute until the court makes and files, in the record of the case, findings of fact.

      (b)      Injunctive relief in a case that involves or grows out of a labor dispute shall prohibit an act only if:

            (1)      the complaint in the labor case expressly complains of the specific act; and

            (2)      the findings of fact expressly include the specific act.

      (c)      Injunctive relief in a case that involves or grows out of a labor dispute is binding only on a person:

            (1)      who receives, by personal service or otherwise, actual notice of the injunctive relief; and

            (2)      who is:

                  (i)      a party to the case;

                  (ii)      an agent or employee of a party or lawyer who represents a party; or

                  (iii)      a person in active concert and participation with a party.