Mailing labels - wrap text if wider than label

When using a 3-column label format, long organization names can spill out beyond the right-hand edge of a label and overwrite the adjoining label. It would be good if long lines were wrapped, preferably at a space, and the wrapped portion shown indented on the following line.

(Not sure what mechanisms we have to do this. Ideally the underlying library has a word-wrap setting we can enable or utilize...).