Hi VJ,
Understanding statutory and non-statutory bonuses
The statutory (annual) bonus, whether for Ganesh Chaturthi, Diwali, or Christmas, is different from what some establishments disburse monthly, bi-monthly, or otherwise. As you know, the 'statutory bonus' is a share of the profits earned by the establishment, which shall be a minimum of 8.33% of the salary or a maximum of 20%, as laid down under the Payment of Bonus Act. This is determined under sections 11, 4, 5, 6, 10, and 12 of the PoB Act. This statutory bonus is payable whether profits are earned or not and must be paid within six months after the closure of annual accounts (which in India is 31st March, making the deadline 30th September). For this purpose, your accounts department shall prepare Forms A, B, C, and D listed in the PoB Rules, 1975 (Central Rules), and submit returns to the Labour Department periodically.
Non-statutory bonuses and productivity incentives
On the other hand, some establishments disburse bonuses monthly or at intervals linked to production and productivity, wherever applicable. This is not a statutory bonus as per the PoB Act. Generally, this kind of bonus is linked to production exceeding targeted minimum threshold limits, computed under a mutually agreed formula. There are also other bonuses (incentives) such as attendance bonuses. While the statutory bonus is compulsory at a minimum of 8.33%, other production-linked bonuses are operated under a bipartite agreement on achieving certain targets only. Both types of bonuses, when applicable, can be operable in any establishment concurrently and as and when "accrued and due." It is customary in many establishments in India ahead of a festival season.
Payment flexibility of bonuses
It's legally permissible to pay the entitled bonus in more than one installment. For example, 50% can be paid during June or July (at times when employees require financial assistance during the reopening of schools/colleges to meet fees, books, etc.), and the balance 50% can be paid before a major festival such as Diwali, usually during October or November. The other bonus can be paid monthly, bi-monthly, or quarterly as per the practice in vogue.