Candidates hoping to drive vans for B&Q in Norwich have complained about the store's unorthodox interview preparation techniques.
Several applicants were asked if they would dance and pull funny faces with the Jackson Five's Blame It On The Boogie as their backing music before beginning face-to-face interviews.
Their prospective employers then photographed them while they performed.
"I was humiliated", claimed candidate Rodney Southern.
"At no point was I told if you don't want to do it you don't have to do it. We were told we had to do it", he recalled.
But B&Q bosses have defended the technique, insisting participation was optional.
The dance and clowning element is not a part of the formal selection process but a "light-hearted" way to relax candidates, they claim.
Unions have forcefully criticised the DIY retailer, calling for an end to this "utterly bizarre" practice.
"It seems to reduce jobs our members do to some kind of joke", argues Ed Blissett of the GMB Union.