'Chrono-working' could be the next employment fad to wash up in Aotearoa.

It lets workers choose their hours dictated by their circadian rhythm, instead of the usual nine to five.

Robert Walters Commercial Director Stuart Nash says people have worked to circadian rhythms for thousands of years.

He says working this way optimises output.

"What we're saying now is - you know what, the best way to get productivity out of the workers is to let them work when they're productive. I will say - this is not an excuse to be lazy."

Nash says this is really another way of describing modern workplace flexibility.

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