If cell contains text "Labour" then return value from another cell.

Good Day; This is my first post, so please forgive me if I don't quite get my point across right.
I'm trying to set up a simple formula with column "J"; that whenever I enter labour in column "C"; it gives me a total in column "J". I have tried {=IF(C6="Labour",G6+H6,) } or {=IF(C6="Labour",I6,,) with no luck.
I would like the labour cell to show either the sub total or add G6 and H6. But I just can't make it work.
Any Useful suggestions?
Thanks for taking the time consider this.



----------A-----------B---------------- C-----------------D-----------------------E---------------------F----------G--------------H------------I-----------J-------------K------------------L

1]-----Date-------Source---------Description--------Unit Price----------------QTY---------------Taxed------Net Price-------Tax-------Sub-Total--Labour------10% markup-------Total
2]
3] 26-Jul-18----Hardware--------Holder-------------$15.00-------------------1------------------------------$15.00---------$----------$15.00----$--------------$1.50------------$16.50
4] 26-Jul-18----Services---------1 Litre Oil----------$10.00-------------------1--------------------x---------$10.00---------$1.30-----$11.30----$--------------$4.18------------$45.99
5] 26-Jul-18----Compressor-----Misc. Brass--------$22.94--------------------1--------------------x---------$22.94---------$2.98-----$25.92----$--------------$2.59------------$28.51
6] 28-Jul-18-----Labour----------Labour-------------$25.75-------------------4.75-----------------x---------$122.31--------$3.35-----$125.66--$125.66------$0.00------------$125.66