in PLN millions, unless otherwise stated
Accounting policies
The Company is obliged to pay specified benefits following the period of employment (retirement benefits due to one-off retirement-disability rights, post-mortem benefits and the coal equivalent) and other long-term benefits (jubilee bonuses), in accordance with the Collective Labour Agreement.
The amount of the liabilities due to both of these benefits is estimated at the end of the reporting period by an independent actuary using the projected unit credit method.
The present value of liabilities from these benefits is determined by discounting estimated future cash outflow using the interest rates on treasury bonds expressed in the currency of the future benefits payments, with maturities similar to those of the liabilities due to be paid.
Actuarial gains and losses from the measurement of specified benefits following the period of employment are recognised in other comprehensive income in the period in which they arose. Actuarial gains/losses from the measurement of other benefits (for example benefits due to jubilee bonuses) are recognised in profit or loss.
Important estimates and assumptions
The amount of the liability due to future employee benefits is equal to the present value of the liabilities due to defined benefits. The amount of the liability depends on many factors, which are used as assumptions in the actuarial method. Any changes to the assumptions may impact the carrying amount of the liability. Interest rates are one of the basic parameters for measuring the liability. At the end of the reporting period, based on the opinion of an independent actuary, an appropriate discount rate for the Company is used for setting the present value of estimated future cash outflow due to these benefits. In setting the discount rate for the reporting period, the actuary extrapolates current interest rates of treasury bonds along the profitability curve expressed in the currency of the future benefits payments, to obtain a discount rate enabling the discounting of payments with maturities which are longer than the maturities of the bonds.

Other macroeconomic assumptions used to measure liabilities due to future employee benefits, such as the inflation rate or the minimum salary, are based on current market conditions. The assumptions used to measure liabilities as at 31 December 2017 are presented in Note 11.2.

Impact of changes in the indicators on the balance of liabilities

20172016
an increase in the discount rate by 1%
(252)( 219)
a decrease in the discount rate by 1%
331285
an increase in the coal price rate and the salary increase rate
by 1 percentage point
347300
a decrease in the coal price rate and the salary increase rate
by 1 percentage point
( 255)( 222)


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