Jobs when I was a student

 I once had a job on a farm
Driving tractors with aplomb
Cutting cabbages in the rain
Was a bit of a bane
But rural bliss had its charm

At Christmas I worked in the post
Christmas cards, there was a host
I was cold in the street
Especially my feet
But when I got back there was toast

My next job was to inspect  trees
To identify which had a disease
We walked up and down
To see which had turned brown
They were all clear, we were pleased