Comparing OCC and IND with new SOC 2018/NAICS 2017 codes

Yes, it should be possible to harmonize the information available in OCC to the 2018 SOC occupation codes. A cross-walk between the 2010 Census codes and the 2010 SOC codes is available on the Census Bureau page you linked above. Next, a cross-walk between the 2010 SOC codes and the 2018 SOC codes is available on this BLS page. Note that if you are using multiple years of CPS data, you may find using the OCC2010 variable helpful.

The process should be similar with the IND variable. A cross-walk between the 2012 Census codes and the 2012 NAICS codes is available on the previously mentioned Census Bureau page. Next, a cross-walk between the 2012 NAICS codes and the 2017 NAICS codes are available on this NAICS page.

Also, in the future, be sure to create a new topic for a question that does not fit under an existing topic.