Tags: Trade Union.
The All India Station Masters’ Association (AISMA) (Regd. No. NDD/09) is an Indian trade union representing the station masters of Indian Railways. Formed in 1953 it is among the earliest examples of work-category based unions in the Indian railway industry. AISMA represents 35770 Assistant Station Masters (ASMs) Station Masters (SMs) Station Managers (SMRs) and Transportation Inspectors (TIs).[citation needed]