Men at Work signs in Brazil adhere to the customs of the continent.
South- and Centralamerican roadworkers are walking around with a spadeful of
dirt —See f.e. Argentina in the South
and Mexico at the northern end of the range.
More to the North workers are standing next to the heap and are shown poking in its mouth with
a stick (e.g. U.S. of A.).
Palearctic road workers do it differently. They are digging (Denmark) or
shoveling (Czechia) or probing (Latvia) the heap.