Primarily the classification in Maharashtra is as below :
Group A - Comprising the developed areas, viz. Mumbai Metropolitan Region (MMR) and Pune Metropolitan Region (PMR).
Group B - Comprising the areas where some development has taken place.
Group C - Comprising the areas, which are less developed than those at Group B.
Group D - Comprising the lesser-developed areas of the State not covered under Group A / Group B / Group C.
Group D+ - Comprising those least developed areas not covered under Group A / Group B / Group C / Group D.
Zones in Maharashtra as classified by the Ministry of Labour Zone I - Comprise of the area falling within the limits of all 'A' and 'B' class Municipal Corporations Zone II - Comprise of the areas falling within the limits of all 'C' and 'D' class Municipal Corporation and 'A' class of Municipal Councils and Cantonment areas Zone III - Comprise of all other areas in the state, which are not included in Zone I and Zone II.
So if Chakan is in PMR, then it will be Zone A, otherwise it will be Zone B