Hernia is a protrusion of an internal part of the body through the defect in the muscle or tissue wall. Inguinal hernias are the most common type. Treatment is surgical. There are two main methods; herrnioraphy and hernioplasty. Procedures can be done in inpatient or one-day surgery. One-day surgery is a surgery that does not require an overnight hospital stay. Hernia repairs are one of the most frequent procedures that are performed in one day-surgery (30% to 80%). The aim of this study was to evaluate the criteria for preoperative patient selection and compare safety in the manner of postoperative complications. Five hundred and ninety patients who underwent surgical repair of inguinal hernia at the University Hospital Centre Zagreb in 2015 were analyzed. 226 of them were treated at the Department of One-day Surgery, and 354 were treated at the main Surgical Department. Most patients of child age (0-18), as well as elderly patients (>74) were treated at Surgical Department. Patients between 19 and 49 years were dominantly managed at the Department of One-day Surgery. Hospitalized patients were mainly ASA II (51.7%), while one-day surgery patients were ASA I (53%). The ones with ASA III were mostly treated at main Surgical Department (20.7%). The greatest number of patients at the Surgical Department underwent surgery under general anesthesia (94.6%). In contrast, patients from one-day surgery underwent surgery mostly under local anesthesia (68%). The percentage of patients with postoperative wound infection was 2 %, and the incidence of postoperative pain was 8 %. The results didn’t statistically differ between the groups. The recurrence rate was slightly higher in the inpatient group (8.7%). Hematomas and seromas had the same incidence pattern; they were rarely present and without differences between groups. The inguinal hernia repair was associated with low postoperative complications and low recurrence rate. Therefore it is considered that both groups were treated in a safe manner and patient selection was adequate.