Asda gives workers more time to sign new contracts before facing dismissal

LONDON (Reuters) - Asda on Friday gave shop floor workers more time to sign new employment contracts or face dismissal in a bitter dispute over changes intended by the British supermarket group to boost productivity.As the Saturday deadline for signing approached, Asda said the workers would have a seven-day "cooling off period" to change their minds before losing their jobs.Chief Executive Roger Burnley wrote to staff, saying almost 120,000 employees had signed up to the more flexible contract..