"And then we take that back, have our interview, and one of the things I'm always looking for at the end of the interview is, does the person doing the interview want to take that empty cup back to the kitchen?"
Innes explained how he devised the test.
"What I was trying to find was the lowest level task I could find that — regardless of what you did inside the organisation — was still super important — that would actually really drive a culture of ownership," he said.
"If you come into the office once one day inside Xero, you'll definitely see the kitchens are almost always clean and sparkling — it's very much of that concept of wash your coffee cup, and that sort of led into the interview space.
"You really want to make sure that you've got people who've got a real sense of ownership, and that's really what I was looking for.
"Attitude and ownership scale, especially in a really fast growing environment like we've been going through and still at this stage as well.
"It's really just making sure that they're going to fit into the culture inside Xero, and really take on everything that they should be doing. It's really served us really well as the business has scaled and grown. We've managed to maintain the value and purpose and culture that makes us special.
"Hiring for attitude is probably the most important thing I believe when you're hiring people, especially in a fast growth company or a start-up environment or scale up environment — you need people with a really strong growth mindset and that comes back to their attitude."