Notes to consolidated financial statements l Note 34

34 RETIREMENT BENEFIT INFORMATION

Pensions

Assore Limited is a holding company which operates through its joint-venture entities and various subsidiary and associate companies and, as such, does not have any employees.

All subsidiary companies provide retirement benefits through either a defined contribution fund (termed “umbrella fund”) or a defined benefit fund.

Defined contribution fund

The group and employees contribute 10% and 5% of pensionable salary to the umbrella fund respectively. Contributions to the fund amounted to R2,0 million (2016: R4,7 million) and the value amounted to R12,6 million (2016: R16,8 million) at year-end. Decrease in the value of the fund is due to the retrenchments which occurred at Rustenburg Minerals during the year.

Defined benefit – Assore Pension Fund

In terms of the Pension Funds Act, the Assore Pension Fund is actuarially valued every three years. The most recently completed statutory actuarial valuation was performed as at 1 July 2014 and revealed a 111,8% funding level. An interim check was performed for funding purposes as at 1 July 2017, which revealed a 122% funding level (2016: 114,1%). The financial position of the fund at the dates of the interim funding checks is set out below:

       2017
R'000 
    2016 
R'000 
  
Change in defined benefit obligation                        
Benefit obligation at beginning of year           484 098        476 302    
Current service cost           33 881        36 490    
Interest cost           43 735        41 165    
Actuarial gain – assumptions           (55 126)       (2 259)   
Benefits paid           (82 988)       (67 600)   
Benefit obligation at end of year           423 600        484 098    
Change in plan assets                        
Fair value of plan assets at beginning of year           552 168        533 776    
Expected return on plan assets           27 632        47 721    
Actuarial loss on plan assets – experience and assumptions           (17 682)       (890)   
Employer contributions           28 768        30 475    
Employee contributions           8 846        8 686    
Benefits paid           (82 988)       (67 600)   
Fair value of plan assets at end of year           516 744        552 168    
Net surplus at year-end per statement of financial position           93 144        68 070    
Components of periodic expense                        
Current service cost           33 881        36 490    
Interest cost           43 735        41 165    
Expected return on plan assets           (27 632)       (47 721)   
Net pension cost for the year           49 984        29 934    
Plan assets invested as follows:           %        %    
Equity securities           60        71    
Debt securities           33        22    
Property           2        1    
Other (cash, cash awaiting investment, bank account)          5        6    
            100        100    

The maturity profile of the benefit obligation at the end of the year is as follows:

       2017
R'000 
    2016
R'000 
  
Due within one year           22 371        68 429    
Due within two years           22 227        20 286    
Due within three years           23 871        19 263    
Due within four years           15 534        20 027    
Due within five years           13 812        11 385    
Due between six and 10 years           141 663        126 230    
Due thereafter           184 122        218 478    
            423 600        484 098    
Expected contribution next year           28 579        26 462    
Actual return on assets for the year comprises:           35 312        46 831    
– expected return on plan assets for the year           32 188        47 721    
– actuarial gains on plan assets           3 124        (890)   
                          
Actuarial assumptions                         
The above valuations are based on the following principal actuarial assumptions:                         
            %        %    
Expected return on plan assets           9,59        9,30    
Post-retirement interest rate           4,22        3,60    
Price inflation rate           6,87        7,40    
Salary inflation rate           7,87        8,40    
Pension increases           5,15        5,50    

Other assumptions

Mortality rate for members still in service assumed at zero.

Pension mortality PA (90) – ultimate table, adjusted for two years’ additional longevity since the previous year-end.

Merit salary increases per sliding scale depending on age starting at 5% per annum below age 25, and reducing to zero above age 50.

Spouse’s benefits for active members – on average, husbands are assumed to be two years older than their wives, and married at date of retirement.

For current pensioners, their actual marital status and, where applicable, the exact age of their spouse has been taken into account.

Set out below is a quantitative sensitivity analysis on the principal assumptions referred to above:

2017 Interest Post-retirement Price inflation Salary inflation Pension increases
Assumptions 1%
increase
1%
decrease
1%
increase
1%
decrease
1%
increase
1%
decrease
1%
increase
1%
decrease
1%
increase
1%
decrease
Impact on defined benefit obligation (36 941) 50 611 (27 514) 54 822 86 274 (49 955) 43 990 (32 182) 57 637 (28 170)
2016 Interest Post-retirement Price inflation Salary escalation Pension increases
Assumptions 1%
increase
1%
decrease
1%
increase
1%
decrease
1%
increase
1%
decrease
1%
increase
1%
decrease
1%
increase
1%
decrease
Impact on defined benefit obligation (42 217) 57 839 (31 444) 62 652 98 595 (57 089) 50 273 (36 778) 65 869 (32 193)

Notes to consolidated financial statements l Note 34