According to the Slovak labour law, employment may be agreed between the parties for a definite or indefinite period.

Employment for a definite period may be agreed (in principle) for no more than two years. Such employment may be extended or repeatedly agreed no more than twice within a period of two years.

Employment shall be considered as agreed for an indefinite period if no time for its duration was explicitly specified in the employment contract, or if the statutory conditions for employment for a definite period were not complied with in the employment contract. Further, employment shall also be deemed as agreed for an indefinite period if employment for a definite period was not agreed in writing.

It should also be underlined that if the employee continues to carry out his/her work after the expiry of the agreed period with the employer’s knowledge, such employment shall be deemed to have been changed to employment for indefinite time (unless the employer agrees with the employee otherwise).