Quoting:
A leafy suburb of north London may seem an unlikely spot for an international radio station devoted to workers' rights.
But it is home to Radio LabourStart, which is using the internet to broadcast reports on the plight of workers around the world.
...
Radio LabourStart is run on a shoe-string budget and broadcast on the net via Live365. According to Mr Lee, it has listeners in 38 countries.
...
You can listen to the kind of things you don't hear on conventional radio," said Mr Lee. The broadcasts are a mix of news and features from a US news service which covers labour news, as well as folk and protest songs.
The article mentions related US-based labor Internet feeds. Doesn't identify the "US news service that covers labour news", though. I assume they add domestic (UK-based) coverage to the US feed.
Perhaps the best of this could find a home on Air America?
See:
http://news.bbc.co.uk/2/hi/technology/3611677.stm