Pay group defaulting in job data

What controls the pay group and employee type default values on the employee's job data (position, job code, salary admin plan, company table or something else)?  We have a new company with two pay groups (non-exempt and exempt).  The pay group and employee type (hourly/salaried) on the job data table automatically updates for new hires when manually keyed (we use Payroll for North America).  The functional user says that the pay group and employee type did not default to the correct value for non-exempt employees.  Thanks, Tracie