To apply for a post-study work visa in Croatia, graduates must first obtain a temporary residence permit for the purpose of seeking employment or starting a business. This involves submitting an application to the local police department or administrative police station responsible for foreign nationals. Required documents typically include proof of completed studies (such as a diploma), evidence of sufficient financial means, valid health insurance, and a valid passport. It's essential to initiate this process promptly after graduation to ensure compliance with Croatian immigration regulations.