The 25-year old midfielder has departed Victoria Park after four years to sign a two-year deal with the Steelmen and is looking forward to the challenge ahead.
"I am absolutely delighted to be joining - Motherwell are a massive club who did so well last season," he said.
"The club has a good fan base and a good manager in Stuart McCall. He was a big pull in me coming here and I am excited about working with him.
"Motherwell as a whole has a good reputation, I have heard nothing but good things and I just can't wait to get the season started now."