A researcher who has an Individual Fellowship which is ending in 4 months has found an attractive job offer and is thinking of terminating the fellowship in order not to lose the new job. Is this legally acceptable by the EC?

Yes, it is possible to terminate the fellowship earlier than planned, especially if the fellow has found an attractive job offer. The host institution needs to put in place an amendment to terminate the grant. The amounts corresponding to unspent months will have to be returned to the EC, but the funding corresponding to the project months already implemented does not have to be returned.