71 The projected unit credit method requires an entity to attribute benefit to the current period (in order to determine current service cost) and the current and prior periods (in order to determine the present value of defined benefit obligations). An entity attributes benefit to periods in which the obligation to provide post-employment benefits arises. That obligation arises as employees render services in return for post- employment benefits that an entity expects to pay in future reporting periods. Actuarial techniques allow an entity to measure that obligation with sufficient reliability to justify recognition of a liability.
Examples illustrating paragraph 71
1 A defined benefit plan provides a lump sum benefit of Rs.100 payable on retirement for each year of service.
A benefit of Rs.100 is attributed to each year. The current service cost is the present value of Rs.100. The present value of the defined benefit obligation is the present value of Rs.100, multiplied by the number of years of service up to the end of the reporting period.
If the benefit is payable immediately when the employee leaves the entity, the current service cost and the present value of the defined benefit obligation reflect the date at which the employee is expected to leave. Thus, because of the effect of discounting, they are less than the amounts that would be determined if the employee left at the end of the reporting period.
2 A plan provides a monthly pension of 0.2 per cent of final salary for each year of service. The pension is payable from the age of 65.
Benefit equal to the present value, at the expected retirement date, of a monthly pension of 0.2 per cent of the estimated final salary payable from the expected retirement date until the expected date of death is attributed to each year of service. The current service cost is the present value of that benefit. The present value of the defined benefit obligation is the present value of monthly pension payments of 0.2 per cent of final salary, multiplied by the number of years of service up to the end of the reporting period. The current service cost and the present value of the defined benefit obligation are discounted because pension payments begin at the age of 65.
72 Employee service gives rise to an obligation under a defined benefit plan even if the benefits are conditional on future employment (in other words they are not vested). Employee service before the vesting date gives rise to a constructive obligation because, at the end of each successive reporting period, the amount of future service that an employee will have to render before becoming entitled to the benefit is reduced. In measuring its defined benefit obligation, an entity considers the probability that some employees may not satisfy any vesting requirements. Similarly, although some post-employment benefits, for example, post-employment medical benefits, become payable only if a specified event occurs when an employee is no longer employed, an obligation is created when the employee renders service that will provide entitlement to the benefit if the specified event occurs. The probability that the specified event will occur affects the measurement of the obligation, but does not determine whether the obligation exists.
Examples illustrating paragraph 72
1. A plan pays a benefit of Rs.100 for each year of service. The benefits vest after ten years of service.
A benefit of Rs.100 is attributed to each year. In each of the first ten years, the current service cost and the present value of the obligation reflect the probability that the employee may not complete ten years of service.
2. A plan pays a benefit of Rs.100 for each year of service, excluding service before the age of 25. The benefits vest immediately.
No benefit is attributed to service before the age of 25 because service before that date does not lead to benefits (conditional or unconditional). A benefit of Rs.100 is attributed to each subsequent year.
73 The obligation increases until the date when further service by the employee will lead to no material amount of further benefits. Therefore, all benefit is attributed to periods ending on or before that date. Benefit is attributed to individual accounting periods under the plan’s benefit formula. However, if an employee’s service in later years will lead to a materially higher level of benefit than in earlier years, an entity attributes benefit on a straight-line basis until the date when further service by the employee will lead to no material amount of further benefits. That is because the employee’s service throughout the entire period will ultimately lead to benefit at that higher level.
Examples illustrating paragraph 73
1 A plan pays a lump sum benefit of Rs.1,000 that vests after ten years of service. The plan provides no further benefit for subsequent service.
A benefit of Rs.100 (Rs.1,000 divided by ten) is attributed to each of the first ten years.
The current service cost in each of the first ten years reflects the probability that the employee may not complete ten years of service. No benefit is attributed to subsequent years.
2 A plan pays a lump sum retirement benefit of Rs.2,000 to all employees who are still employed at the age of 55 after twenty years of service, or who are still employed at the age of 65, regardless of their length of service.
For employees who join before the age of 35, service first leads to benefits under the plan at the age of 35 (an employee could leave at the age of 30 and return at the age of 33, with no effect on the amount or timing of benefits). Those benefits are conditional on further service. Also, service beyond the age of 55 will lead to no material amount of further benefits. For these employees, the entity attributes benefit of Rs.100 (Rs.2,000 divided by twenty) to each year from the age of 35 to the age of 55.
For employees who join between the ages of 35 and 45, service beyond twenty years will lead to no material amount of further benefits. For these employees, the entity attributes benefit of 100 (2,000 divided by twenty) to each of the first twenty years. For an employee who joins at the age of 55, service beyond ten years will lead to no material amount of further benefits. For this employee, the entity attributes benefit of Rs.200 (Rs.2,000 divided by ten) to each of the first ten years.
For all employees, the current service cost and the present value of the obligation reflect the probability that the employee may not complete the necessary period of service.
3. A post-employment medical plan reimburses 40 per cent of an employee's post-employment medical costs if the employee leaves after more than ten and less than twenty years of service and 50 per cent of those costs if the employee leaves after twenty or more years of service.
Under the plan's benefit formula, the entity attributes 4 per cent of the present value of the expected medical costs (40 per cent divided by ten) to each of the first ten years and 1 per cent (10 per cent divided by ten) to each of the second ten years. The current service cost in each year reflects the probability that the employee may not complete the necessary period of service to earn part or all of the benefits. For employees expected to leave within ten years, no benefit is attributed.
4. A post-employment medical plan reimburses 10 per cent of an employee's post- employment medical costs if the employee leaves after more than ten and less than twenty years of service and 50 per cent of those costs if the employee leaves after twenty or more years of service.
Service in later years will lead to a materially higher level of benefit than in earlier years. Therefore, for employees expected to leave after twenty or more years, the entity attributes benefit on a straight-line basis under paragraph 71. Service beyond twenty years will lead to no material amount of further benefits. Therefore, the benefit attributed to each of the first twenty years is 2.5 per cent of the present value of the expected medical costs (50 per cent divided by twenty).
For employees expected to leave between ten and twenty years, the benefit attributed to each of the first ten years is 1 per cent of the present value of the expected medical costs.
For these employees, no benefit is attributed to service between the end of the tenth year and the estimated date of leaving.
For employees expected to leave within ten years, no benefit is attributed.
5. An entity has 1,000 employees. As per the statutory requirements, gratuity shall be payable to an employee on the termination of his employment after he has rendered continuous service for not less than five years (a) on his superannuation, or (b) on his retirement or resignation, or (c) on his death or disablement due to accident or disease. The completion of continuous service of five years shall not be necessary where the termination of the employment of any employee is due to death or disablement. The amount payable is determined by a formula linked to number of years of service and last drawn salary. As per the law, the amount payable shall not exceed Rs.1,000,000.
The amount of gratuity attributed to each year of service will be calculated as follows:
Number of employees not likely to fulfil the eligibility criteria will be ignored.
Other employees will be grouped according to period of service they are expected to render taking into account mortality rate, disablement and resignation after 5 years. Gratuity payable will be calculated in accordance with the formula prescribed in the governing statute based on the period of service and the salary at the time of termination of employment, assuming promotion, salary increases etc.
For those employees for whom the amount payable as per the formula does not exceed Rs.1,000,000, over the expected period of service, the amount payable will be divided by the expected period of service and the resulting amount will be attributed to each year of the expected period of service, including the period before the stipulated period of 5 years.
In case of the remaining employees, the amount as per the formula exceeds Rs. 1,000,000 over the expected period of service of 10 years, and the amount of the statutory threshold of Rs. 1,000,000 is reached at the end of 8 years. Rs. 1,25,000 (Rs. 1,000,000 divided by 8) is attributed to each of the first 8 years. In this case, no benefit is attributed to subsequent two years. This is because service beyond 8 years will lead to no material amount of further benefits
74 Where the amount of a benefit is a constant proportion of final salary for each year of service, future salary increases will affect the amount required to settle the obligation that exists for service before the end of the reporting period, but do not create an additional obligation. Therefore: