Accumalaton of El more than prescribed by the Factories Act and Shop Act automatically laps as per the interpretation of both the provisions.However if any employer want to give etc benefit to their employees can make specific rule and policy for encashment of the same. its totally depends on will and wish of employer.
Diff. sets of leave rules are possible for diff.category of employees. Such policies are in vogue in many companies. This is prevalent especially in mining companies. There exists diff. maximum limits for accumulation of leave as well. It is nothing wrong to have like this, provided, for operational convenience they are formulated and implemented as a personnel policy in any particular Estt. More so in JVs where two or more diff. entities merge as one reincorporating and reenacting old wine in new bottle. In such cases we cannot rule out disparities between two groups. This is not only in leave rules but in other benefits like OT, PF & pension, perks/fringe benefits and so on.