Probably, in that context, they are saying they want someone who plays by the rules and - especially if this is a management position - knows how to avoid sticking themselves in a situation where they might get sued by an employee. I think they're misusing the word, but my guess is they mean they want someone who's work relationships are more likely to be distantly polite that buddy-buddy and who tends to deal with worker problems in a more legal than emotional context... not a good choice of words even for that, but unless the job opening is for a paralegal or someone who specifically deals with employee gripes, that's probably the gist.