Specialized machinery and technology are now available, increasing competition means that businesses have to keep costs low, and most people recognize that higher living standards can result from being specialized.
Advantages of division of labour include workers being trained in one task and specializing in it, creating efficiency and output, and less time being wasted moving from one workbench to another.
Disadvantages of division of labour include workers becoming bored doing just one job, potentially leading to a fall in efficiency, and if one worker is absent and no one else can do the job, production may fall.
Added value is important because it pays other costs such as labour costs and may be able to make a profit if these other costs total less than the added value.
A business can increase added value by increasing the selling price but keeping the cost of materials the same, or by reducing the cost of materials but keeping the price the same.