International monitors Human Rights Watch took Russia to task Wednesday over abuses faced by migrant workers rushing to prepare for the 2014 Winter Olympics in Sochi, but Moscow quickly rejected the claims. In a report released a year before the February 7, 2014 start of the games, the US-based group said many construction workers from post-Soviet nations had their passports confiscated and worked 12-hour shifts with few days off at the Caucasus Mountains resort.