A salaried employee with other income not from work – I work as a salaried employee and have incomes not from work, am I required to pay insurance contributions on the income not from work?

​Those who work as salaried employee and have incomes not from work (the income of a person not defined as self-employed is also held as income not from work) will pay insurance contributions on his work salary up to the maximum income liable for the payment of insurance contributionsThe amount of maximum income on which insurance contributions are paid. Insurance contributions are not paid on any income that is above this maximum. The maximum is updated every year in accordance with the rate of the rise in the Consumer Price Index.
His income not from work will be subject to insurance contributions up to the maximal income, after deducting 25% of the average wage and taking into account his income as salaried employee.