Several Occupations are considered to be critical, and closely related (CORE) to the Chemical Sector. The mapping of Job Titles for the purposes of 2013 WSP/ATR submissions to "CORE" Occupations on the OFO were analysed in terms of job title usage (i.e. in the occupation, across sub-sectors and equity level statuses). A summary report for each occupation per Major Occupational Group was prepared. The purpose of this Mapping Overview report is to draw attention to the most pertinent Job Title-to-OFO Occupation challenges observed.