A railway employee on grade pay 2400 is seeking to join an SSC MTS role (grade pay 1800) using their service for age relaxation. They are asking about the necessity of a 'technical resignation' and obtaining a No Objection Certificate (NOC) for this transition. Advice suggests that for SSC recruitment, an NOC might not be strictly required, with intimation to the Head of Office being sufficient, though the concept of 'grade pay' is outdated post-2016 pay revision. There's also a caution that a technical resignation or NOC might not be granted for a lower-paying post.