It had its world premiere at the Sundance Film Festival on January 25, 2010. It was released on June 11, 2010, by IFC Films. The film received positive reviews from critics.
The film follows Joan Rivers for 14 months, mostly during the 76th year of her life.[2] The film made an effort to "[peel] away the mask" and expose the "struggles, sacrifices and joy of living life as a ground breaking female performer."[3]The New York Times reported that Stern and Sundberg "lucked out" with their timing, starting to film the year before Rivers won Donald Trump's Celebrity Apprentice in 2008.[2]
Joan Rivers: A Piece of Work received positive reviews from film critics. It holds a 92% approval rating on review aggregator website Rotten Tomatoes, based on 108 reviews, with a weighted average of 7.65/10. The site's critical consensus reads, "Penetrating Rivers' coarse image, this compelling documentary offers an honest, behind-the-scenes look at her career -- and at show business in general."[12] On Metacritic, the film holds a rating of 79 out of 100, based on 34 critics, indicating "generally favorable reviews".[13]