Jay Gohil is employed as supervisor at a chromium sulfate factory of Apollo Chemicals in Gujarat. The workers there are experiencing deteriorating health conditions; respiratory diseases and cancers and five eventually succumb to their illness, all because of the poorworking conditions at the factory. Leader of their union is in cahoots with the factory management and turns a blind eye to their problems. Reluctantly Jay becomes the voice of his colleagues and demands wage hike and medical insurance. Angered by the workers' demands, factory owner decides to shut it down. Jay's son Harsh believes in Gandhism and plays a key role in raising the workers' issues.
Patel had worked as chemical engineer in Gujarat before moving to Cananda. He based the film on his observations of the workers in chemical factories in Gujarat. The project began under the title Kamdar Union and marked Patel's maiden attempt at making a full-length feature film. Costumes worn by actors in the film were bought from a local market and were "age" using "herbal colours and other products" in 11–12 days each. The filming took place at Vatva, Ahmedabad and other places in Gujarat and it was wrapped up towards the end of December 2016. Patel cast Indian actors for his film and managed the finances himself. However, the post-production work was done in Calgary, Canada and the film's title was changed to Union Leader.
Though critical of the film, Anna MM Vetticad in her review for Firstpost praised Bhat's performance and gave the film a 1.5/5 rating. He opined that the film's " to its cause" was its strength and that Bhat had brought an "X factor to his performance" which exceeded the screenplay's limitations. He, however, felt that the supporting characters had not been used "effectively" which robbed the film of its "emotional stirrings". Nandini Ramnath of Scroll.in was appreciative of the film's "sympathetic portrayal of the workers", noting that the "convincing cast of supporting actors... actually look like blue-collared representatives rather than Bollywood extras". She wrote that the remaining cast "works better" than Bhat who was "passable". Pallabi Dey Purkayastha of The Times of India gave the film a 2.5/5 rating, noting that although the film showed "pragmatism" but "crumbles towards the end because of poor execution". Ravi Bule of Amar Ujala wrote that Shome did justice to her role, while rating the film 2/5.
