What does it mean when someone says "you are too much to work for?"?

It is an alternative way of calling you “high maintenance.”

I don’t know you or your circumstances or anything about you. If someone said that to me, though, I would take a hard look at my behavior, and check in with my friends about it.

Think of it as saying that if you applied a numerical value to the pleasure they get from your company. And then they did the same for the baggage/drama/discomfort you cause them.

You would be a negative number. So the bad is worse than the good.

Luckily, now that you know that you can start working on it. It might be time to think about how your actions affect people people around you. Generally, do you want everything to revolve around you, do you get upset when you are not the center, do get bored when people talk about them-self and then try to turn everything into your stuff?

That is the best way to get a negative number.

It means you’re exhausting your employees either physically, emotionally, mentally or some combination of the 3.

If my employee told me that I would want to take a hard, and honest self evaluation of my performance as a manager. As a leader at work, it’s my job to empower and support my employees, so they can do their best work. In many ways, I try to set up a dynamic where I am frequently asking my employees if there are ways I can help/support them. They work hard and I empower them to make decisions. This keeps them happier and more productive than a top-down military style of leadership. The keys to productive and happy employees is autonomy, mastery and purpose. At the end of the day we generate more revenue, have lower turnover and have a more positive work environment as a result. That’s good business.

I should add, it takes a lot of courage for an employee to work up the courage to give you that kind of feedback. I hope you thanked him/her for doing so.

As evidenced by the above answers, context is everything. Can you supply a little more information?

It means they will be looking for a cheaper date.
or-
You are a bad boss/manager
or-
You take up too much space.

But whatever it is, it may not be good.

It can also mean that the persons saying it have bad judgement skills.
Or, it’s not you, it’s them.

It might mean that they think you’re a PITA.

They could just be a lazy bugger!

I’m with @chyna, I need context and how you know this person.

Off the bat with little info, @zenvelo‘s answer would be mine.

A person considered high maintenance means that they make too many demands that cause undue stress on others.

Substitute “impossible” for “too much”. Then, if there are others working for you, or you have access to those who have worked for you previously, determine if this is the consensus of opinion. Then decide whether or not it matters.

Getting to know you and live with your perks/querks is just too much and not worth the trouble.