The firm only admitted having a connection with the disaster after non-governmental organisations revealed it was an important contractor for Ali Enterprises, which ran the factory.
Kik stocked its shops on high streets across Germany with €15.99-a-pair jeans made at the Karachi factory, where around 1,500 people worked across three storeys with just four exits and a serious lack of basic safety measures.
It burned to the ground in early September, killing more than 259 workers who were trapped inside and leaving their families destitute.
After Kik was named as a potential customer, it emerged that the company was actually the major contractor of Ali Enterprises, Der Spiegel reported on Tuesday.
Kik has admitted issuing 75 percent of the firm's contracts, while workers at Ali Enterprises say “at least 90 percent” of their work was for the German discounter, the magazine said.
And although Kik has put $500,000 into a compensation fund for the families of those who died, this has attracted condemnation from Pakistani trades unions – it works out to $1,930 or less then €1,500, for each person who died.
“That is damn little,” said Nasir Mansoor from the Pakistani association of trades unions NTUF. “And we also don't know when and via whom the payments will be made.”
He said if the money on offer is not increased, relatives and survivors would sue Kik.
Kik manager Michael Arretz has been trying to improve the firm's image over the last couple of years, Der Spiegel said.
He has made assurances that the compensation fund would go to families, particularly those affected who had not been given any support by the Pakistani government, which has promised around €5,500 to those who lost relatives.
Many families have complained they have received nothing, while those who have been given cheques say they either bounce – or that they do not have bank accounts in which to cash them.
There remains confusion about how many people actually died in the fire – with 63 still registered as missing, trades unions say more than 300 died. Twenty-nine bodies remain unidentified.
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Arretz told Der Spiegel he had had difficulty organising the payments as the company did not have a suitable agent on the ground, but that there was now someone in place.
The unions in Karachi say Kik knew about the terrible safety standards at the factory, including blocked escape routes and sealed windows. Many of the people working there had no contracts, making it difficult for those who were hurt in the fire – and those whose relatives perished – to prove they were there.