I checked with Stats Canada:
Column 22. Working at trade in factory or home
"F" specified work in a factory, "h" for work in a home, and "fh" for work in both factory and home.
Column 23. Months employed at trade in factory
Number of months employed in a trade at a factory.
Column 24. Months employed at trade in home
Number of months in their trade in a home.
Column 25. Months employed in other occupation than trade in factory or home
For those who were employed in an occupation other than their trade, or if an individual who usually worked at a trade was engaged in any employment.
Column 26. Earnings from occupation or trade $
Column 27. Extra earnings (from other than chief occupation or trade) $
I'm guessing it's $ per month.