Very easy to play! I tabbed it myself. I couldn't find any chords for this song so 
I figured it out by ear. 
Comments are welcome! ;) miguelcorreia93@hotmail.com

Standard Tuning

Cadd9 = x 3 x 0 3 3
G     = 3 x 0 0 3 3 
Dsus4 = x 0 0 2 3 3 
Em7   = x 2 2 0 3 3 


           Cadd9                   G
Now you've been up and you've been down 
                    Dsus4               Em7
Stayed strong even though daddy wasn't around 
                     Cadd9              G
My momma through the thick and the thin beginning to end 
                Dsus4                                Em7
And though I be sinning you keep me livin' with that love that you givin' 
               Cadd9 G                       Dsus4              Em7
It's unconditional hey the sun shines when I see a smile on ya face 
                  Cadd9                G
My momma with the money and jewels the record and tours 
             Dsus4                          Em7
I'd give it away if I could make your days happy days 
            Cadd9              G
And when my hearts broke and can't cope I'm comin' on home 
         Dsus4            Em7
To remember the reason why I was born 
      Cadd9                     G                           Dsus4
Cuddle up inside your heavenly arms you help me weather the storm 
                    Em7 [let it ring]
You love music so I put it in song 

[Chorus] 
       Cadd9 G Dsus4      Em7
She's an Angel workin' on God's train 
       Cadd9 G Dsus4      Em7
She's an Angel workin' on me 
       Cadd9 G Dsus4      Em7
She's an Angel workin' on God's train 
       Cadd9 G Dsus4      Em7
She's an Angel workin' on me 

[Verse 2]
         Cadd9                  G
I wasn't born wild you know you raised me right
        Dsus4                      Em7
But the roads of Alabama called me into the night 
         Cadd9                 G
From the coke and the weed and extacy 
                Dsus4                        Em7
I'm lost in the streets but you still remain next to me 
    Cadd9                  G
The blood that I bleed it flows through your veins 
             Dsus4                            Em7
Even in my lowest point I can still hear your words to my brain 
      Cadd9                       G
First time I was arrested mommas love was tested 
                Dsus4                                   Em7
I couldn't contest it so here's my confession you're my blessing
           Cadd9                       G
You're the reason I believe you're the reason I sing
           Dsus4                      Em7 
You're the reason angels tangle me in heavenly things
            Cadd9        G 
It's been a long road so hard and cold 
        Dsus4                     Em7 [let it ring]
But you keepin' me warm with your heart of gold 

[Chorus] 
       Cadd9 G Dsus4      Em7
She's an Angel workin' on God's train 
       Cadd9 G Dsus4      Em7
She's an Angel workin' on me 
       Cadd9 G Dsus4      Em7
She's an Angel workin' on God's train 
       Cadd9 G Dsus4      Em7
She's an Angel workin' on me 

[Verse 3]  
           Cadd9                   G
You're the light at the end of the tunnel the break of the day
          Dsus4                         Em7 
After the darkest night chasing all the evil away 
          Cadd9                  G
You're my flowers and sunshine cherries and red wine 
Dsus4                     Em7
Diamonds they can't find shining through hard times 
           Cadd9              G
You're the angel on Earth the proof there's a God 
    Dsus4                             Em7
The reason to keep on going you're my light in the dark
          Cadd9                   G 
The first star in the sky and the last to leave 
                Dsus4                                Em7  [mute]
And when I'm travelin' through the night I feel your light on me 

[Solo]


[Chorus] 
       Cadd9 G Dsus4      Em7
She's an Angel workin' on God's train 
       Cadd9 G Dsus4      Em7
She's an Angel workin' on me 
       Cadd9 G Dsus4      Em7
She's an Angel workin' on God's train 
       Cadd9 G Dsus4      Em7
She's an Angel workin' on me