Common work-at-home schemes to avoid include: 

• envelope stuffing;
• rebate processing;
• online searches; and
• medical billing. 

If you feel like you've been scammed, you can report the company to the FTC by calling 877-FTC-HELP, as well as your state's Attorney General's office. 

Do your homework and check with the Better Business Bureau to check the legitimacy of a prospective work-at-home program. There are a lot of valid opportunities out there, but a little caution can save you a big headache down the road.