Is an employee required to give two weeks notice when quitting a job? IL - just gave 2 weeks' notice of resignation of job.Could the company fire me and avoid paying out those 2 weeks? Learn how to write a professional two weeks notice letter with our easytouse template. In the US, two weeks notice is a custom, not a legal requirement. A two weeks notice letter must be professional and concise. Clearly state the intention to resign, citing the last working day. State your resignation. Atwill employees can quit at any time with no notice. However, it is customary to give two weeks notice (or even more if you hold a high level position).