Lookup fields not populating data using table-to-table relationships

Did you create the [Business Title] field directly in the Overtime table, or did you bring it in through the table-to-table relationship?  If you create it in the Overtime table, it's not linked to anything, but if you add it to the relationship (viewing the relationship, click the "Add Lookup Fields" button at the bottom of the right-hand pane), it appears in the child table and is automatically linked to the related field in the parent table.