There are always some people complain they work very hard but earn a little money, the boss force them to work overtime, but never pay for their additional work, they feel hopeless, they think there are full of frustration in their life. they don't know how to change their life.
How to work less and earn more? below are my suggestion,
First, how much you boss pays to you depends on how much profit is gained from your effort, not how much you have done everyday. so people who work in a highly profitable company earn more money commonly, and people who can bring more profit for the company earn more money generally. work hard can help you to earn more, and you must work in the RIGHT company and be efficient.
Second, if you are irreplaceable or it's difficult for the boss to find a replacement of you, then you can earn more money. if you are the core of the business, then the boss will try his best to keep you working for him. how to be an irreplaceable employee? you should always be ready to bear the most challenging responsibilities. do the tasks others can't do, do the tasks better than others. it's difficult but worth.
Third, good interpersonal relationship is more important than your ability of working, if you can let people around you feel happy, then they will like to work with you, they will give you good evaluation, and even some good opportunities which can help you to make repid progress in your career.
