Ron and members, I've started this thread to understand what "related occupations" mean in the context of AC21 Same or Similar rule. As an example, beneficiary is working for a Network Monitoring/Planning software company. He uses both software as well computer networking related skills on the job. Given that he primarily works on the software related to the company, let's say the SOC used is 15-1132. Looking up related occupations online, the following SOC codes are listed. http://www.onetonline.org/link/summary/15-1132.00?redir=15-1031.00 5-1121.00 Computer Systems Analysts 15-1122.00 Information Security Analysts 15-1131.00 Computer Programmers 15-1133.00 Software Developers, Systems Software 15-1134.00 Web Developers 15-1141.00 Database Administrators 15-1142.00 Network and Computer Systems Administrators 15-1143.00 Computer Network Architects 15-1199.01 Software Quality Assurance Engineers and Testers 15-1199.02 Computer Systems Engineers/Architects Let's say the beneficiary accepts a new job using EAD (under AC21 rule as network engineer (which still matches his skillset but responsibilities are "slightly" different), the SOC code for network engineer could be 15-1142 (or) 15-1143. Now, when USCIS adjudicates the pending I-485 and evaluates "same or similar" occupations: 1. Is the beneficiary safe because original SOC 15-1132 and new SOC 15-1142/43 are related? 2. In addition to the SOC, does the 50% responsibilities similarity also come into play? Basically, is it just sufficient for the SOC codes to be related? (or) is it a combination of 1 AND 2? Of course this is upto USCIS's discretion as I understand, but I would like to know how much of leeway does one have in this case. Thanks!