Background Injuries pose a major public health and development problems in construction work places. However there is limited studies and given less attention by the government and companies to protect the construction workers from injury.This study aims to estimate prevalence and factors associated with injury among 40/60 condominium construction workers in Addis Ababa, Ethiopia.

Methods A cross-sectional quantitative data method was conducted to estimate the prevalence and factors associated with injury among 40/60 condominium construction workers. For the survey, 504 workers from city government of Addis Ababa 40/60 condominium sites were selected using multistage sampling technique. Data were collected using pre-tested and structured questionnaire. The data were entered by using EPI Info version 7 and analysed using SPSS version 20, and results were presented in tables and figures. Odds ratio with 95% confidence interval was used as a measure of effect.

Result The prevalence is 38.3%, of the respondents have got injuries. Marital status (married of [AOR: = 0.054 (0.005–0.616)], single AOR: = 0.058 (0.005–0.661), Divorcee [AOR: = 0.072 (0.005–0.0989)] and coupled [AOR: = 0.031 (0.002–0.403)], service [AOR: = 0.404 (0.231–0.711)], chewing chat [AOR: = 2.570 (1.589–4.158)] and not using personal protective device [AOR: = 0.355 (0.192–0.654)] were significantly associated with injury among 40/60 condominium construction workers.

Conclusion In this study the prevalence of injury among 40/60 construction workers was 38.3% CI 95% (33.9, 42.5) with significant associated factors of marital status, chat chewing, service year and not using personal protective device. Therefore counter measures such as creating awareness of risk factors, providing and using personal protective devices could be effective to decrease prevalence of injuries among construction workers.