ANSWER: 1st July 2014
Explanation:
Under this scheme ex servicemen of same rank and same length of service will get uniform pension regardless of date of retirement. Pension will be re-fixed every five years and personnel who retire voluntarily will not be covered under OROP scheme. The estimated cost to implement OROP will be 8000 crore rupees to 10,000 crore rupees at present and it will increase further in future. All arrears to be paid in four half-yearly installments & all widows to be paid arrears in one installment.