Dear Tapan,
A labor license is issued by the labor department if you have more than 20 personnel working in your establishment. Generally, it is for a one-year duration, after which you may renew it if your contract is extended or renewed.
License Renewal Requirement
There is a clause that clearly states you are bound to obtain a license if you have employed 20 or more personnel at any time during the past 12 months. So, keeping that in mind, once you have obtained the license, you have to continue it for the remaining currency of the license period. If you continue the contract after that with even fewer people, the last twelve-month rule will imply that you have no choice but to renew your license.
Remember, it is simpler to renew than to apply afresh.
Good luck.
Regards,
Colonel Gahlot, Proprietor
'TRURECRUIT'