Labour members have backed a motion to increase the minimum wage to £15-an-hour across the country.
But the motion was not supported by Keir Starmer, who said the party has already committed to a minimum wage of "at least" £10-an-hour.
Speaking to ITV News, the Labour leader said: "We were very clear on Saturday a £10 minimum wage which is a 12% increase and means £2,000 in real money for those that would benefit under that.
"That is significant, that is our policy and it is alongside a wider package of measures to protect people at work - including day 1 rights and including statutory sick pay.."
The issue has become a major dividing line for left-wing members who are angry at Sir Keir's leadership.
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Currently, the minimum wage is £8.91 for those 23 and over, £8.36 for those aged 21 and 22, and £6.56 for 18 to 20-year olds.
Part-time workers, casual workers, agency workers, apprentices, trainees, disabled workers, agricultural workers, foreign workers, seafarers and offshore workers are all entitled to minimum pay.
However, the UK is lagging behind other countries and didn't even land in the top 10 for increasing minimum pay, seeing only a 21.98% increase in minimum wages.
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