Hi, Kacie! I've done some research, and I have not been able to locate any discounts specifically for offshore employees. Before I tell you for certain that there are none, your best bet is to contact someone in the human resources department. Most places that offer discounts have someone in HR that will have discounted tickets or various offers available to their employees.
If you have AAA, you may be able to find a package through them that puts everything together for you at a little bit of a discount, but with some exclusive offers. You can also do a web search and maybe find some discounted tickets. I have used Undercover Tourist myself in the past, and have had good experiences with them.
Don't rule out discounts from Walt Disney World directly. If you scroll down to the lower part of the official webpage at
Disney World Information, you'll see promotional offers being made by Disney directly. Right now, for example, there are room discounts of up to 30% for this coming spring.
Have a wonderful time planning, and if you need help, come back and see me!