Image copyright AFP Image caption Migrant workers on a World Cup 2022 infrastructure building site in Doha

The football authorities must act to end the "sub-human" conditions of migrant labourers working on 2022 World Cup facilities in Qatar, Labour says.

Jim Murphy, who recently visited Qatar, said some workers had been lured to the country under false pretences.

The shadow international development secretary said he met migrant workers who then had their passports taken away so they could not leave.

The English and Scottish football associations have declined to comment.

'Torn up'

Concerns have previously been raised by labour groups after dozens of migrant workers reportedly died working on construction projects in the country.

Image copyright AFP Image caption Many of the migrant workers in Qatar come from South Asia

Following pressure from football's world governing body Fifa, organisers of the 2022 tournament developed a Workers' Charter in an attempt to protect the rights of migrant employees.

Qatar controversy Qatar was awarded the right to host the tournament in 2010

Since then, concerns have been raised about the treatment of migrant workers in the country

BBC Middle East business reporter Leane Hosea has reported from labour camps in Qatar, where she said conditions were "overcrowded" and "dirty".

Several workers in the country have also died, prompting concerns from labour groups

But Mr Murphy has now called for more pressure from football authorities after witnessing conditions first hand during a visit with the the International Trade Union Confederation (ITUC).

He said that many migrant workers had signed contracts in countries such as Kenya and Bangladesh in which they were "promised wages they couldn't earn at home", but when they arrived in Qatar their contracts were "torn up".

"Many of them have their passports seized from them by their employers" and were left "living and toiling in conditions that are sub-human", he said.

Image copyright Getty Images Image caption An artist's impression of a 2022 World Cup stadium in Qatar

Mr Murphy, who met organisers of the tournament during his visit, said he had been given assurances there would be changes to the controversial sponsorship system known as Kafala.

The ITUC says that under the system, migrant workers are not allowed to end unfair employment contracts or change employers.

Mr Murphy said: "I think we all have to, through the football authorities in this country and beyond, make sure that those promises that were given to me are now delivered on."

He said the sport would be "embarrassed" and "ashamed" forever "unless Fifa and the football authorities act on workers' rights.