Low wage workers and supporters protest for a $15 an hour minimum wage.

Societe Generale's resident bear Albert Edwards has admitted to being caught off guard by continuously weak U.S. wage data.

"I had expected it to roar like a lion, but instead it has been as gentle as a lamb," said Edwards in a research note on Thursday, highlighting that three consecutive employment reports have seen average hourly earnings – a key measure of wage inflation - surprise on the downside.