ACI 318-14 Building Code references ACI 301-16 which is the Specification for Structural Concrete.  This code requires certified finishers.  Please be sure your project specifications are up to date!  Certified finishers add quality and value to your projects.    Here is how the revised code reads:

ACI 301-16 5.3.4.1. Finisher Qualifications - Unless otherwise specified, at least one finisher or finishing supervisor shall be a certified ACI Flatwork Concrete Finisher/Technician or a certified ACI Flatwork Technician or equivalent. 

For more information regarding this issue, you can contact the National Institute thru:  www.concrete.org or this local office at: 480-966-2213 or email us at:  azaci@outlook.com