A new study by the remote-work website Flex Jobs lists the most common work-from-home jobs. Fourteen make the list, with sales and customer service roles rising to the top. However, one thing you'll notice is that none of them have $100,000-plus-per-year earning potential. In fact, many pay $50,000 or less. Which invites the question: Why is making a six-figure income so hard to do at home? Here are three reasons.

1. You don't get enough face-time with management.

If you want to make more money, you need management to validate your value. As they say, out of sight, out of mind. It's harder for management to assess and appreciate your impact when you're not around. That face-time in the office with your boss and other key players is a chance to share your ideas, discuss your accomplishments, and market your skills. Think of yourself as a business-of-one that must be in charge of selling yourself. That's much harder to do from your home.

2. Your network isn't growing.

Your reputation as a top performer is the third-party credibility your business-of-one needs to persuade employers to pay you more. Working from home limits your opportunities to network and connect with people who can vouch for your expertise. Additionally, over 80 percent of all jobs today are gotten via referral. Working from home reduces the opportunities you have to build strong bonds with professionals that could help your career grow. And, if you lose your work from home job, you may not have a large enough network to help you find your next one.

3. You're out of touch with what new skills you should be acquiring.

When you work from home, you don't see the changes going on inside the organization and how they might impact your future employment. More important, you miss out on opportunities to see where you could upskill to add more value to the company so you could ultimately ask for more money. Staying on top of trends and changes to your career path or industry is vital these days. Things change within companies at a very rapid rate. When you work from home you don't get to see all that, which means you can start to lag in terms of your value to the organization. Consider this: If your employer ever decides it doesn't need your skill set anymore, how will you ask to be redeployed in the organization when you don't even know what other options you could market yourself for?

Working from home is a very desirable option for many people.

If you're not looking to have a six-figure income, then the chances are better than ever that you can realize your dream of working remotely. But just be sure you understand the implications. There are trade-offs to all jobs. Knowing the limitations can help you minimize the downsides.