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Employee benefits (Tables)
12 Months Ended
Dec. 31, 2025
Information  
Summary of employee benefits provisions

31 December

31 December

  ​ ​ ​

2025

  ​ ​ ​

2024

Retirement pay liability provision

 

2,074,592

3,144,599

Unused vacation provision

 

816,101

824,158

2,890,693

3,968,757

Summary of movement in provision for retirement pay liability

Movements in provision for retirement pay liability are as follows:

  ​ ​ ​

2025

  ​ ​ ​

2024

Balance at 1 January

 

3,144,599

3,183,356

Service cost

 

493,572

646,459

Remeasurements

 

(1,161,825)

231,601

Interest expense

 

711,056

696,536

Benefit payments

 

(409,802)

(534,804)

Inflation adjustment

(703,008)

(1,078,549)

Balance at 31 December

 

2,074,592

3,144,599

Summary of sensitivity of provision for retirement pay liability

The sensitivity of provision for retirement pay liability to changes in the significant actuarial assumptions is:

31 December 2025

Interest Rate

Inflation Rate

Sensitivity Level

  ​ ​ ​

1% increase

  ​ ​ ​

1% decrease

  ​ ​ ​

1% increase

  ​ ​ ​

1% decrease

Change in assumption

 

(13.1)

%

15.6

%

16.1

%

(13.6)

%

Impact on provision for defined benefit plans

 

(271,772)

323,636

334,009

(282,145)

29.Employee benefits (continued)

Provision for defined benefit plans (continued)

31 December 2024

Interest Rate

Inflation Rate

Sensitivity Level

  ​ ​ ​

1% increase

  ​ ​ ​

1% decrease

  ​ ​ ​

1% increase

  ​ ​ ​

1% decrease

Change in assumption

 

(14.2)

%

17.2

%

6.6

%

(22.7)

%

Impact on provision for defined benefit plans

 

(446,533)

540,557

207,544

(713,824)