Changing visitor status to worker in Canada involves a process with Immigration, Refugees and Citizenship Canada (IRCC). This allows visitors to apply for a work permit without leaving the country, as long as they meet certain requirements, such as having valid visitor status and a job offer from a Canadian employer. The process includes applying online, submitting biometrics, and maintaining legal status while awaiting a response. Seeking professional assistance is recommended to avoid errors and ensure a successful application.