I came across Slow, men at work in Max Boyce's, the Welsh folk hero, Max Boyce Songbook Volume 2 in 1993. It's a delightful tirade against that most popular of British working men and very icon of industriousness, the council roadman. There are so many songs of this ilk but Max Boyce's is for me the best. Just regard the second verse:
   "But it's a dangerous job both cruel and hard,
    They risk their lives when the floods are bad,
    One drowned last week when clutching his spade,
    He slipped and fell in the tea he'd made"
Slow, men at work employs the same folktune as William Brown and A Matelot Came to Our House Once.