The person export is used for mailings, but it does currently not contain the jobs (job fields is empty). This is essential information for a mailing.
So the job need to be added. There can be multiple jobs, but as Excel does not support collections in a field, only the first job will be added. (when you need a person it is already OK to contact him on one of his companies)
The first job of the person need to be added to the person export
Columns: Job 1 company, Job 1 function, Job 1 department
Choose the easiest/most straight forward option:
Option 1: the same as xlsx and csv export
Option 2: add all jobs as childs