I remember a parody from the late 50s or early 60s of the song Fourpence a Day, and it was titled Four pounds a day. I think that now it should be re-titled £40 a day, and that's not a lot in this day and age, so it will also be overtaken by inflation.
^^^
The rain's a pouring on the site, the tea's upon the brew
We're sitting on our arseholes with nothing else to do
Some want the rain to go to Spain, we want the rain to stay
Cos we're rained off and contented on four pounds a day

Four pounds a day me lads, and bugger all to do
No trouble from the foreman, he's in the union too
Outside our picks and shovels, they slowly rust away
We're rained off and contented on four pounds a day

So Paddy get the cards out, the racing page as well
As for the contractors, we hope they go to hell
The tea boy is on bonus, each brew means better pay
We're rained off and contented on four pounds a day.

Can't remember any more for the moment, but I have an old vinyl of The Iain Campbell Folk Group singing it, so if anybody wants more words, just shout.
Failte......Giok