Companies in Dubai have in the past been criticised for human rights violations against labourers. Some of the 250,000 foreign labourers in the city have been alleged to live in conditions described by Human Rights Watch as "less than humane". The mistreatment of foreign workers was a subject of the difficult-to-make documentary, "Slaves in Dubai" (2009). The Dubai government has denied labour injustices and stated that the watchdog's (Human Rights Watch) accusations were "misguided". The filmmaker explained in interviews how it was necessary to go undercover to avoid discovery by the authorities, who impose high fines on reporters attempting to document human rights abuses, including the conditions of construction workers.