Unilever in New Zealand is the latest firm to trial a 4-day week without cutting pay. Manuela Saragosa speaks to Paddy Gamble, the CEO of Perpetual Guardian which manages trusts, wills and estate planning. A couple of years ago they put their 240 staff on a four-day week but paid them for five. He says productivity has gone up since they introduced it. Charlotte Lockhart runs a global campaign for a 4-day week and she says its easy to do and its doesn't cost very much. But Marc Effron, president of The Talent Strategy Group, a global human resource management consultancy firm says a four day week doesn't actually improve productivity.

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