While Human Rights groups have claimed that mishaps to labourers have occurred here in the past, the tournament's organisers alleged that this was not a outcome of his working conditions.
The 80,000-seat Lusail stadium, which is among at least eight venues for the 2022 World Cup, is due to host its first match - the country's Emir Cup final between Al Sadd and Al Rayyan - on Friday.
"We believe we are going to have a huge influx (of fans), 1.3 million during the tournament", said Khater, speaking as Qatar unveiled its first fully refurbished World Cup venue, the Khalifa International Stadium.
The file photo shows a foreign worker climbing scaffolding at a stadium being built for the 2022 World Cup in Doha, Qatar.
However, earlier this month an Indian carpenter died of a heart attack he suffered shortly after leaving the stadium site, Reuters reports.
In a statement, the Supreme Committee claimed that Kumar's death was a result of natural causes.
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Conditions for workers from India, Nepal and Bangladesh, who are building the $200 billion infrastructure upgrade for the World Cup, have come under scrutiny from rights groups, which say that migrants live in squalor and work without proper access to water and shelter from the sun.
Qatar's World Cup stadium was scheduled to hold its first football match on Friday - as migrant workers working on its construction continue to face abuse.
The kingdom says it is implementing labour reforms and previous year hired a British consulting firm to assess working conditions on stadiums in an effort to improve transparency.
Autopsies and post-mortems on people who die sudden and unexpected deaths are forbidden by Qatari law unless a crime is suspected. "But we're moving now into the hottest time of the year when the risk of fatality increases", Gulf labour researcher Mustafa Qadri said on Thursday.
"Migrant workers at Khalifa International Stadium have already suffered the consequences of Qatar and FIFA's failure to genuinely address the dangers of Qatar's sponsorship system".
In a March 2016 report called "The Ugly Side of the Beautiful Game: Exploitation of Migrant Workers on a Qatar 2022 site", Amnesty highlighted how migrant workers were exploited at the Khalifa Stadium.