To see your paycheck in your dream symbolises the results of your hard work and the fruits of your labour. It is an indication of your level of confidence and strength.
The dream also serves as encouragement and motivation for you to continue working hard. You will be rewarded for your efforts. Consider the amount on the check.
If it is higher than expected, then it means that you are being well rewarded. If it is lower than expected, then you are being undervalued.
It may also refer to money worries and your concerns about making ends meet. Perhaps you are lacking confidence and suffering from low self-esteem. You are unsure about your work performance.