Staff at a Calgary burger joint say someone is stealing their tips and now they have video proof.

Video surveillance from Boardwalk Burgers and Fries in Crowfoot Crossing shows one man order food and then grab $5 from the tip cup once the server heads for the kitchen.

It's been going on for weeks, according to workers who aren't sure if it's the same person.

Grade 12 student Taylor Latour works in the kitchen and is saving up to buy a car. He says every penny counts.

"We work really hard to try and make the restaurant better," said Latour. "We're working for the tips and, to have that taken away from us, it kind of takes the wind out of our sails."

Police investigating

"It makes you kind of instantaneously angry," he added.

Owner Romeo Orantes says his staff is glad to see the video proof.

"Now that we have the footage they're like, 'See, I told you, somebody's taking our tips,'" said Orantes.

"You come buy a burger for $7 and take $5 from your server, I don't think it's fair for them."

Orantes says he has contacted police and handed over the video.