Zac Efron With Neighbors Like This ... You'd Never Leave Home

9/25/2015 2:42 PM PDT

Behold Zac Efron's body ... at work.

Shirtless Efron is holding court on the set of "Neighbors 2" in Atlanta, and based on this pic ... we're guessing the majority of his scenes will require minimal wardrobe -- at least if someone wants to keep a job.

Zac's abs just made it official ... 6-packs are out!