Objective: To compare postplacental and early postpartum intrauterine device (IUD) insertions with postpuerperal and interval IUD insertions regarding the reason for continuation and discontinuation. Material and Methods: A study of 130 women (84 postplacental and 46 postpartum) and a control group of 138 women (62 postpuerperal and 76 interval) who had T Cu 380A IUDs inserted were followed-up at 8 weeks and 6 and 12 months, and the data was analyzed. Results: Continuation occurred in 38.6% of the study group and in 72.3% of the control group (p<0.001). The highest continuation rate was in interval, postpuerperal and postplacental groups respectively (p<0.05). The reason for discontinuation was frequently partial expulsion in the study group (52.6%) and displacement in the control group (27.8%). The insertion time of IUD most frequently discontinued was postplacental in the study group (55.2%) and interval in the control group (31.3%). Conclusion: The results of this study suggest that the postplacental and early postpartum IUD insertion techniques should be re-evaluated in units that offer this service to decrease the rate of discontinuation due to complications.