I have built a custom module based on the human resource modules, I was able to translate the modules hr, hr_expense, hr_holidays, hr_payroll, hr_payroll_account, however I have not been able to translate the module hr_contract and can not find a reason. The process was as follows: - Export the archivo.po with modules translate (Settings -> Translations -> Import / Export -> Export Translation). - I created an i18n directory within the directory of my module. - Finally I placed the *. Po within this directory.