The following are confirmed producers that No Doubt worked with on Push and Shove.
Brixton Angels (Anthony Gorry and Steve Sidelnyk) Edit
No Doubt are confirmed to be working with UK production duo Brixton Angels, made up of Anthony Gorry and Steve Sidelnyk. They started collaborating in November of 2011 up until February of 2012. With Gorry traveling back and forth from Santa Monica, California to London, he continued to keep fans updated on his progress via Twitter. Gorry also revealed to fans that he was working on remixes for the album as well. Gorry Tweeted that he was working on "beautiful" No Doubt music.
Major Lazer (Wesley “Diplo” Pentz and Dave “Switch” Taylor) Edit
Being friends with Tony Kanal and remixing for Gwen Stefani in the past (Diplo), dancehall and reggae fusion duo, Major Lazer, first approached No Doubt to appear on their album in June of 2011. "Push and Shove" actually ended up going on the band's album. Major Lazer joined No Doubt in the studio in June and then finished the track in Jamaica with reggae star, Busy Signal, whom also makes an appearance on the song.