Irish Men at Work signs belong to the new-world group of signs: they are diamonds while Old-World (European) signs are triangular. Should we read that as a statement towards Great Britain? That Irish (men) are independent? That they are not happy with brexit? But if the shape is a statement, how should the European Union understand it? After all, apart from the shape, on most signs the drawing is a New World design, found in f.e. Mexico, Peru (both with hat), Chile (unprotected head), but not on the Old Continent (†).

It is not the only thing that raises questions.
We know that men at work always turn their back to the traffic (see also Great Britain). Our samples show men either looking left or right. This is confusing for visiting drivers because it is not clear if one should keep left or right on the road.