Eight firms have signed up for this year's event. Workers from Gala Coral, Boxpizza, The Light Shopping Centre, Nawaab Leeds International, Sainsbury's in Headingley, Esporta in Bradford, Intuition driving school and Deeva Restaurant in Farsley will take part in the 2010 competition.

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There are almost no limits on how the £50 is spent - but it must be paid back to Sue Ryder Care in June, along with some healthy interest.

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At the end of the challenge, the most impressive team will be crowned 'Sue Ryder Care Wheatfields Hospice Charity Entrepreneur of the Year', with other titles awarded for innovation and raising the charity's profile.

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Fundraiser Clare Griffiths said: "This is a really exciting challenge for both Sue Ryder Care and the companies taking part.

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"It is wonderful to see a network of companies being enthusiastic and eager to get into the team spirit and support their local hospice."

* To take part in Big Wigs or help one of the teams, call Clare on (0113) 2033377 or email: clare.griffiths@suerydercare.org