The son of Mr. Sinha (Suresh Oberoi) changes everything in order to maximize profits. This brings him into conflict with his employees including Dinanath Saxena. When Dinanath openly confronts Hiralal in a public meeting, Hiralal wants him to tender a written apology, but Dinanath instead resigns and decides to open his very own mill with the help of a struggling Engineer, Ashok Mathur. They do eventually succeed, go into production, hire employees, and soon earn a good reputation. Dinanath gets his daughter, Meena, married to Ashok, who becomes a ghar jamai, much to the chagrin of Smita, the daughter of multi-millionaire Kundanlal Batra, who had expected Ashok to marry her. She soon concocts a scheme to bring discord in the Mathur family, and also ensure Ashok's ruin.
In the 1980s an English serial, Master Of The Game had nearly same story as Mazdoor.
After Nikaah, Salma Agha was also to be in Mazdoor and even recorded one song but didn't do the film and she was also acting in Amit Khanna's Sheeshe Ke Ghar opposite Raj Babbar she even recorded all the songs, like Mazdoor she also didn't do this film then Padmini Kolhapure replaced her.
Rati Agnihothri was uncomfortable with her role and asked Ravi Chopra if she could leave the film. He assured her she would perform well and to just leave it up to him to make sure she performed well.
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