Ensuring that the exceptional termination of the employment contract is properly managed is always an important issue for employers and collective agreements deal with the principles that make it possible to implement this provision more precisely. This is the case of employment contracts concluded under the Eesti Energia Narva Elektrijaamad *58, which describe acts under which such termination of the contract may be carried out in the sector concerned. A similar restriction applies to persons who are defined only as employees. For example, adherence to a collective agreement between economically dependent persons who work as self-employed or contractual is prohibited by the law of obligations (they are not legally considered to be under employment contract) and their contractual partners. . . .