Hmm, interesting post, i think this should work:
. 1 White candle.
. Picture of the co-workers.
Light the white candle and focus your thoughts on the co-workers, chant this three times:
You hath attempted to undermine my friend,
For that.. this spell I shal send,
( co-worker's name) you shal play alone at your own game,
You shal drown in your own shame,
My friend is not your victim, his life shal remain the same,
So mote it be!"
Burn the picture in the candle, blow the candle out and bury the picture's ashes away from your home.
Order Of Darkness.