Underemployment is the term used for workers who get fewer hours than they want and need to live on. In the UK there are now at least 1.4 million workers on zero-hours contracts and 865,000 agency workers, many of whom struggle to get enough hours a week to survive on. Added to which, companies are increasingly employing people on a part-time basis, often on contracts of 10 hours or less. This leaves workers dependent on any extra hours management may choose to offer them. According to the Office for National Statistics, just under 10% of the working population or 3.3 million people want more hours; or to put it another way, are part unemployed.  To put this into context there are now twice as many people underemployed as there are unemployed.