Termination and Notice Period Adjustment
In general terms, either party can terminate by giving notice or, in lieu of notice, payment of an equivalent amount to the notice period. This is the discrete power of the management to decide whether to pay against the accumulated earned leave or to adjust it against the notice period, if the earned leave is sufficient to meet the requirement.
As per your company rules, the SL (Sick Leave) is not being encashed, so it cannot be adjusted or does not have cash value. Further, your leave policy is silent about the adjustment of leaves against notice pay. It is better to ask the employee to render the Notice Period. At settlement time, you can pay his balance earned leave, but SL will lapse.
Thank you.