The number of people working without guaranteed working hours or basic employment rights has increased by 27 per cent over the past five years, according to new research.
Conducted by TUC, the study revealed that it is mainly traditional industries that have driven the increase of "insecure workers" by 660,000, with restaurant and pub waiters making up one-fifth of the increase.
Figures have revealed that the number of insecure workers, including casual, temporary, agency and self-employed workers, has more than doubled since 2011, rising by 146,000 or 128 per cent.
The social care worker also accounts for one-tenth of the increase in insecure working, with the number of care home workers in this type of role rising by 66,000 or 133 per cent since 2011.
Commenting on the figures, TUC general secretary Frances O'Grady stated that the rise in insecure worker numbers suggests this is becoming the new "normal" way to work for modern workers.
She said: "It’s happening across new and old industries, with workers forced onto shady contracts whether they’re Uber drivers, bar staff or teaching assistants."
“People need jobs they can live on and build a life around. But if you don’t how much work you will have from one day to the next, making ends meet is a nightmare," she added.