The number of people living and working with cancer in the UK is rising significantly and will continue to do so in the future. Currently there are 560,000 people with cancer in the UK workforce, equal to 1.5% of the total, but this is estimated to rise to over 1 million, or 3.3% of the workforce, by 2030. Many people with cancer want to and are able to continue working but lack of support for both employees and employers can prevent this. Providing better support could allow an additional 63,000-136,000 people with cancer to remain in or return to employment.