Mostly North American union related, but a few others around the word and mostly in English, but some Spanish and one or two in German/Portuguese iirc. Some of the podcasts listed are inactive, but a lot of them release regularly.

https://www.laborradionetwork.org/lrpn-members-1/labor-radio-podcast-weekly

https://www.laborradionetwork.org/lrpn-members-1/the-labor-radio-podcast-daily

Above are the podcasts of the website/network itself if you would prefer to see features from the other podcasts first before looking through 100+ podcasts.

There is a wide range of podcasts: a lot of teacher’s unions, entertainment workers, aviation workers, labor history, etc. So enjoy, if this is the kind of thing you’re into.