This one suddenly came to me while playing some Dire Straits...
The original is on piano, but this is nice to play on an acoustic as a 
solo folk song (the last verse can be played with some distortion to go
with the tone of the lyrics). I've tabbed this out in the key of G because
I naturally sing low and it's how I remember the song, but feel free to
transpose it to A if you can sing like Don. If so, then play as follows:

G becomes A
C becomes D
D becomes E
Em becomes F#m
Bm becomes C#m

That's it! Here's the song. Apparently, this was inspired by Don's
grandfather and his experiences farming. Think of it as a soft-rock 
counterpoint to "Foreclosure of a Dream" :-)

G                  (can play C here, but not necessary)
I used to work for Harvester,
G
I used to use my hands,
C
I used to build the tractors and the combines,
     D
that plowed and harvested this great land...
      Em               C  
Now I see my handiwork on the block
Em           Bm 
Everywhere I turn,
Em                             C
And I see the clouds cross the weathered faces,
      Bm                  D
And I watched the harvest burn...

That's essentially it, as all the verses can be played with the same basic 
progression
(G / C / D followed by Em / C / Em / Bm / Em / C / Bm and end on D)

At the end (after "I don't see next year's crop"), return to the second
progression:

      Em             C 
And I sit here in my back porch in the twilight, 
      Em                Bm
And I hear the crickets hum...
      Em          C
Sit and watch the lightning in the distance,
        Bm            D
but the showers never come...
  Em           C 
I sit here and listen to the wind blow,
  Em           Bm
I sit here and rub my hands,
  Em           C
I sit here and listen to the clock strike,
    Bm                          C (end on C) 
And wonder when I'll see my com-panion again..

That's about it. Economically and politically a bit dated, I guess, but
still packs a punch musically.

- G.