The present disclosure pertains to a system and method for monitoring usage of a respiratory medicament delivery device. Regular use of a respiratory medicament delivery device at intervals prescribed by a doctor may be critical to a subject's health. The system described herein is configured to monitor usage of a respiratory medicament delivery device such that manual tracking of a patient's adherence to a dosage plan by a doctor, for example, is not required. Monitoring usage of the medicament device delivery device may allow the doctor to judge the adherence of the subject to the dosage plan and encourage increased adherence. Improved adherence by the subject may result in improvement in the condition of the subject and economic benefits including reducing costs associated with re-hospitalization after discharge. In some embodiments, the system comprises a medicament delivery device and a usage event monitoring device.