There are a couple of other threads around with similar working titles, but this one was written br B. Springsteen (or similar) and recorded circa 14 years ago by The Flying Pickets. It's a great a capella version.

It starts:

Early in the morning factory whistle blows...

I believe we had a thread on this over 12 months ago, but I don't know how to go back that far.

Regards
John