The Federation of Bangladesh University Teachers` Association (FBUTA) has threatened to work from January 11 if the government does not deliver on its pledges of removing "discriminations" in new pay scale.FBUT President Prof Farid Uddin Ahmed made the dire warning at a press conference held in Dhaka University`s Teachers` Club on Saturday afternoon.As a part of the demonstration they also announced to wear black badges while taking classes on January 3 and 11:00am to 1:00pm strike on January 7, ASM Maksud Kalmal, general secretary of FBUTA told reporters at a press briefing.