The article focuses on the financial security of employees in the first 14 calendar days of a temporary sick leave caused by sickness, injury or another specified social situation. The financial security is generally ensured by public system of sickness insurance in the form of sickness benefits. However, the sickness benefit is provided only from the 15th calendar day of a temporary sick leave and the sickness benefits are paid by a bearer of the insurance, i. e. a district social security administration, which is a state authority. In the period of the first 14 calendar days a sick pay is provided by an employer instead of sickness benefits. When determining the amount of this compensation, principles similar to determining sickness benefits are applied. Sickness benefits are calculated based on only a part of an income. Ensuring financial security during a temporary sick leave is thus regulated both by private law in the Labour Code as well as by public law in the Act on Sickness Insurance.