“A Tribunal may make a costs order…and shall consider whether to do so where it considers that a party has acted vexatiously, abusively, disruptively or otherwise unreasonably in either the bringing of the proceedings (or part) or in the way that the proceedings (or part) have been conducted”
“… conduct which occurs outside the bringing or conducting of proceedings, even if it has some connection with it, will not necessarily give rise to the power to make a costs order… So costs may not be awarded against a party simply because they have posted abusive messages on social media about another party's witness… but if the abusive messages are intended to intimidate the witness from giving evidence in the proceedings, that may well fall within rule 76(1)(a)…see Bolch v. Chipman[2004] IRLR 140 , at [55]”