Can you list your employment history on a separate page?
Can you list your employment history on a separate page if you were previously employed at a lot of jobs?
I would say NO, this is not a good idea. You don't say why you had so many jobs, but in general, that would be a warning sign to most employers. Most will be looking for an employee they can get a return on investment for, someone who is likely to demonstrate some loyalty to the company and stick around for at least a year or two. If you've changed jobs more often than that on a regular basis, I wouldn't call attention to it by listing them on a separate page.
You only need to include about the last 10 years or so of experience on a resume. So if you have a lot of jobs because you've been working longer than that, then you'll be OK just to list the most recent 10 years.
I don't know if this helps you, so if not, feel free to use the comments link to ask a more specific question or provide more info.