As with all of her albums, Childs wrote or co-wrote all the tracks for "Union". She embarked on a relationship with her "Union" collaborator David Ricketts, living and working together, and the songs on "Union" have much to do with their relationship. In a 1988 article that praised Childs's originality and the craftsmanship of "Union", "Time" magazine said, "if she can get an album like Union from a single relationship, the music she makes from the rest of her life should really be extraordinary". Music videos were produced for the songs "Don't Walk Away", "Stop Your Fussin'", and "Walk And Talk Like Angels". These were made available on the VHS "Toni Childs: The Videos". The song "Dreamer" was included in the soundtrack to the film "Moonlight and Valentino" soundtrack.