Service Advisor

Service Advisor here at Nissan. I am currently enrolled in college for Architecture. I had an interview for a company that aligns with my field as an Architect. They offered me the job. I accepted. I start January 5th, 2026. If I tell my employer tomorrow 12/3/2025 that the 24th of December (3 week notice) will be my last day, will they let me work until the 24th? Or, will they release me on spot since I put in my notice? Been reading posts on Reddit how they will just let Service Advisors go if they put in a notice.