Currently, this benefit is offered by just 9% of respondents to the survey. However, a further 10% of the total sample plan to add it to their flex plans.

Other predicted fast-growing benefits include salary sacrifice cars, gadget insurance and low-emission cars. These are all expected to be offered by double the number of respondents that currently offer them.

Well-established benefits, such as holiday buy and sell, gym discounts and health cash plans could see double-digit growth.

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Read more of the Employee Benefits Flexible benefits research 2014