"Two Weeks Notice" is no longer an expected matter of etiquette, in fact, of late an employer will terminate the employee (unless the person or job is unique) immediately. An employer does not want a dead-head hanging around doing nothing, stealing, or sabotaging the business.
With a litigious society, an Employer will usually only be asked:
1. Was the person employed there?
2. From when to when?
3. Would you rehire the person? [This is the most important, Yes/No]
4. (Sometimes) What was the wage?
The reason: Because asking or answering anything else *might* lead to a Lawsuit for defamation or slander.