Have you moved up within your own company? Maybe you have changed jobs and got a salary boost. Now that you are disabled, you remember that you made 20% less when you filled out your long-term disability policy. This is a fairly common scenario. Few people rarely keep the same job several years. If you are a good employee, you are getting raises and promotions.
Fortunately, the insurance company will look at the occupation or job you were performing at the time you became disabled, not at the time you bought the policy. This is good for you, but it is still a good idea to review your long-term disability information whenever you change jobs or move to a different address. This way, you are preventing any potential complications if you need to file a disability claim.