Private bus drivers and crew under the aegis of Motor Thozhilali Samyukta Samara Samithi, a combine of bus workers under different political parties, have threatened to go on an indefinite strike from Monday demanding better wages and working conditions. A statement issued here by the Samithi on Saturday demanded that the government take steps to announce interim wages revision in view of the work on a comprehensive wages revision that is already under way. The comprehensive wages revision would take at least two years for completion, the press release added. Workers under the banner of CITU, INTUC, BMS, AITUC, STU, UTUC, HMS and TUCI are part of the Samithi.