Yes, definitely. But that depends on your definition of wealthy.

If you worked just 40 hour weeks, to make $1,000,000(before taxes) in a year, your hourly rate would have to be about $480. Can you find a job that pays much? Probably not, but maybe. It all just depends on what you consider to be wealthy. $100k a year would take a much more reasonable $48/hr pay.

But as an employee, you might be paid bonuses. CEOs(considered employees) certainly are.

So yes, its possible, but you just need to work a lot or have a high paying job.