5 Dos and Don'ts for Law Office Halloween Costumes - Greedy Associates. I had to laugh at this post about BigLaw Halloween parties, and advice to Associates about what to wear and what not to wear. My favorite is the one that says: "Don't be offensive". Of course, these days, offensive is just about anything you say or do. I think that I am going to have a Halloween party at my office, all by myself, and I will dress as a Washington Redskin.