Dear Friends,
Month is any one of the twelve periods of time into which the year is divided. We all know well that a year normally comprises of 365 days but a leap year has 366 days. When we divide 365 or 366 by 12, we get fractional values only i.e., 30.41 and 30.5 only. But we know in English Calendar some months have 30 days, some others have 31 days and the month of Feb has 28 or 29 days. In Tamil Calendar some months have even 32 days. So, the number of days a month comprises of is a matter of approximation for calculation purpose.In the field of employment, wage or salary is in general the compensation given to the person employed in consideration of the work done by him. It may be based on quantity of work done or piece-rate or time taken in terms of hour, day, week,month or year or a combination of quantity and time.It depends upon the nature of work or the nature of employment relationship. When the employment relationship becomes continuous or permanent, a cosistent level of efficiency is expected from the employee and to maintain it, the wages paid by the employer has to include the day of rest. Therefore, for the sake of convenience of calculation a month is assumed to have 30 days or 4 weeks( though a week has actually 7 days ). Whether as a matter of religious impact or physical limitation, I don't know, the 7th day after a continuous work for 6 days became a day of rest by convention and by Law as well. So, by adding up the 26 days of actual work plus the 4 days of rest, a month recognized to be comprising of 30 days as an economic reality for calculation purpose in the realm of employment. Regarding the justification given by Janardhan( with an element of well-founded doubt, of course) , I would like to request him kindly to go through Rule 23 of the Minimum Wages ( Central ) Rules, 1950.