The city workers are taking part in the annual "I'm a Banker ... Get Me Outta Here" event in aid of the charity.
The driving force behind "I'm a Banker" is Roberto de Cristofano. Roberto, who is from Rayleigh works for Deutsche Bank in London. His middle daughter Lili has been using Little Havens for several years for respite breaks as she was born with a rare genetic condition which affects her development.
Roberto, who is married to Sarah and has two other daughters, says, "Each year this event just gets bigger and bigger. The bankers all say they have great fun and satisfaction from helping such an amazing cause."
Tasks achieved on last years event weekend included enlarging family car parks, pruning large trees, painting the exterior of the hospices and creating vegetable beds so the hospices can grow their own food.
As the charity relies almost entirely on voluntary donations, the bankers can help by giving their time for free and sprucing up the hospices to make them as nice as possible for the children and families staying there.
Sarah organises a party each year for the children and their siblings that use Little Havens on the Saturday afternoon. "Little Havens has become part of my family's life now and I don't know what we would have done without it. Little Havens gives us a chance to relax and re-charge our batteries and spend time together."