Our Panamese worker is full of contempt: If it weren't for us de Lesseps would still be waiting for his Canal. And he continues: Let's show them a really good dig.

—
He has a point of course. The designation trabajando doesn't look entirely appropriate. That man from Argentina is idly poking around and the guy of Chile is tripping away from the scene without any load on his spade. Therefore a more diplomatic wording would have been advisable.