Writing workshops? I can't even imagine what that is, so my guess is no.
Basically, you and other people who have random written works just get together, usually with some guidance from someone with considerable writing experience. You then share your writing, give impressions, ask questions, etc to polish the pieces. I imagine they vary in effectiveness by who goes, but I know in my community there are people who have managed to make their writing into something profitable (including the occasional book deal) thanks to the support they've gotten.