This is no problem. As you already guessed, you will need to create a custom label set.
Now it depends a little on what version of Limesurvey you use. My explanations will be for the version 1.9, but as it is a new installation I assume you use the same one.
First of all, you need to choose the right question type, which would be array.
Now you have two options to:
A. Create a new labelset that you can reuse later (good if you will have several questions with the same labelset. Go to "Edit label sets" (top navigation line) -> "Create or import label set".
B. If you don't need to use the label set too often you could just go and create an "array" question. Once you have created the question Limesurvey asks you to create "answer options" (horizontal) and "subquestions" (vertical). So you just add your subquestions like "You had a pay raise", etc. and your answer options (Y, N).