<P> By and large, the system has subsequently been successful in increasing the productivity of tea garden workers as they save on daylight by finishing the work during daytime, and vice versa . Working time for tea labourers in the gardens is generally between 9 a.m. (IST 8 a.m.) to 5 p.m. (IST 4p. m .) It may vary slightly from garden to garden . </P> <P> Noted film maker Jahnu Barua has been campaigning for a separate time zone for the north east region . </P> <P> Sagina Mahato, a 1970 Bengali film, directed by Tapan Sinha, deal with labour rights in the tea plantations in the Northeast during the British Raj . </P> <P> Paradesi (2013 film) (English: Vagabond) is a 2013 Indian Tamil drama film written and directed by Bala . The film is based on real life incidents that took place before independence in the 1930s especially in southern tea estates . </P>

Where do we find tea plantation in india