Reacting to Tofail’s comment on Sunday, Khan said the allegation was baseless and the minister had resorted to falsehood.
He outright rejected allegation of sending any letter to the US or anyone.
His comments came while speaking to journalists before leaving for Geneva on Sunday.
The minister said if he had not gone to the US, he would never have learnt that ‘IndustriAll’ chief BNP leader Nazrul Islam Khan and Awami League’s Roy Ramesh Chandra lodged complaints with the US.
While denying sending any letter recently, Nazrul stated that he did send a letter in 2007 to US trade union bodies requesting not to withhold the trade privilege for Bangladeshi goods under the GSP in the US market.
The US authorities, however, eventually suspended the GSP facilities following the death of more than 1,100 workers in Rana Plaza collapse and Tazrin Fashions fire.
Founded in 2012, IndustriAll Global Union represents around 50 million workers in the mining, energy and manufacturing sectors in 140 countries around the world.
BNP leader Nazrul Islam Khan heads its Bangladesh chapter.