
You need to provide leave as stipulated in the Act which is applicable to your Organisation and you cannot combine leaves as per your discretion. While Earned leave can be encashed sick leave cannot be encashed and to be availed only in case of sickness.
From India, Madras
You have rightly pointing to need to have simple provision and there is no need for all these different types of leaves like CL, EL, PL, AL, ML, HPL, EOL, LWP, etc., etc. prevalent in many organisations.
From India, Mumbai