SAG-AFTRA All Good with Late Night Hosts' 'Strike Force Five' Podcast

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The titans of late night are teaming up to talk shop on a new podcast -- all in an effort to support their striking employees -- and at least one union is totally cool with that plan ... on certain conditions.

A rep for SAG-AFTRA tells TMZ ... the just-launched "Strike Force Five" show -- featuring Stephen Colbert, Jimmy Kimmel, Jimmy Fallon, Seth Meyers and John Oliver -- is all good in their book ... assuming they stay within guidelines set forth by strike regulators.

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