Thank you for this response - it is thoroughly informative and useful. You are correct to say, with reference to your earlier comments, that you were misunderstood. The questions I put forward in my post were to arouse a spirit of inquiry and not to contradict your conclusion (which is absolutely correct). I have appreciated and agreed with your conclusion in the earlier posts. However, I was not convinced by the logic that was put forward earlier - that an ex-employee is not eligible or entitled to benefits accrued while he worked. In fact, my way of looking at the problem was entirely different!
A situation has been posed, then it has been unnecessarily complicated by putting forward theories of weekly-offs and entitlement, etc. Why should the matter be looked at in the light of the concept of Weekly Wages or weekly entitlement? By throwing in these irrelevant variables, the issue gets unnecessarily complicated, and the mind gets clouded.
In my opinion, instead of getting into these newly-"imported" concepts, if we go by the traditional aspect of salary administration and system, there is absolutely no dispute or complication. According to the established practices of Personnel Administration (HRM) in India, if a person separates on the 18th, he will get his salary up to the 18th; if he separates on the 19th, then he will get his salary up to the 19th; if it is on the 20th, he will get salary up to the 20th... and so on and so forth. This has been going on faultlessly for decades in Indian industries. You can verify this from any veteran HR professional!
This is exactly what you also concluded. A person separating on the 19th will get a salary up to the 19th of the month. (Any reward, award, incentive, or other payables can be given later on as arrears.) So, in fact, if you see, we both are saying the same thing! While you are looking at it from the legal angle, I am looking at it from the angle of the well-established system and procedure of salary administration.
Why unnecessarily introduce the concept of days of the week or weekly wages or whether to include or exclude the weekly off? This kind of system has come after the introduction of the 5-day week, the concept of sandwich leave which stipulates that if a person is on leave on Saturday or Monday, then he loses the salary of 3 days, which includes Sunday, etc. The tried, tested, and established system says - The DATE of separation (and not the DAY of the week of separation) is important. Thus there is no ambiguity here. If a person is separating on the 19th, he will get a salary up to the 19th; he cannot get the salary for the 20th; irrespective of whether the 19th is a Monday or Saturday.
I hope the above helps in simplifying the issue.
Warm regards.