Dear Mr. Dhingra,
I also think the same way you do. Unfortunately, there is no direction from the government on this concept, due to which companies apply this sandwich rule. In my opinion, this rule per se is not bad. It prevents mass leave by employees, but it should not be used in its strict sense if somebody has taken leave on some genuine grounds; in such a case, this rule should not be applied.
Let me narrate an incident involving my brother. My brother fell ill just one day before Diwali. In that year, there was a situation where there were 4 days off for Diwali. My brother could not recover by the end of that holiday period and was advised by the doctor to take another 4 days of rest. Although he only took two more days of rest and reported back for duty, his leave account was debited by 7 days while every other employee had enjoyed 4 days of leave. I wrote a letter to his HR with the doctor's prescription, and only after that was he given the credit of 4 days of leave.
I know how it feels, but if you look at this rule from the company's perspective, it should be applied in cases where an employee who has Saturday and Sunday off takes leave on Friday and Monday just for amusement, being off duty for 4 consecutive days. Many companies may not be able to afford such leave. Necessity is one thing; if someone does this due to a genuine problem, this rule should not be applied. That is why I said it depends on company policies. Every company policy should be implemented in a humane manner; this is my belief. There should be a balance in the situation.
The government should come up with some directive on this.
Regards