Withholding will be most accurate if you complete the worksheet and enter the result on the Form W-4 for the highest paying job. Be sure to check the 'multiple jobs' box on the w form.And read the instructions on filling it out. This video goes over how to complete Form W-4 if you have 2 jobs or if you are married and your spouse works as well. You would check the box if you have two jobs. This guide describes how to apply for jobs using the Career Page web site. The process consists of the following steps: At both jobs select single, then check the box in section 2 for having multiple jobs. This is to pay your taxes. If you need more space use additional sheets of paper prepared in the same format.