Handling of timers

System, methods, entities, and computer program for handling timers in a communication network are described. The communication network comprises a plurality of entities (100-108). The method in a first entity (100) comprises determining (301) whether a supervision condition for supervising a communication procedure is fulfilled. The method further comprises adding (308), based on a result of the step of determining the supervision condition (301), a timer validity information to a signaling message related to the communication procedure, and sending (308) the signaling message to a second entity (102). The method in a second entity (102-108) comprises receiving (400) a signaling message associated with a communication procedure, the signaling message containing a timer validity information. The method further comprises determining (401) whether a further processing condition for performing further steps of the communication procedure is fulfilled, the further processing condition being associated with the ti