These were distinct posts within India Post created to head certain categories of Post Offices (POs) — Grade I being heads of major branch/HO/POs, Grade II & Grade III for other levels.
For example, a recruitment-rule document lists “Postmaster Grade-III (Level-7)” among non-gazetted staff of Group C.
However, a major order from October 2019 merged the Postmaster Grades I/II/III cadre into the “General Line” cadre (LSG, HSG-II, HSG-I) of Group C roles.
Recruitment / Eligibility: Earlier rules indicated that existing officials at certain levels (e.g., LSG, HSG) could apply for Postmaster Grade posts.
Responsibilities: These posts were meant to head POs and oversee operations including mail, savings bank services, etc. (See reference to “Manager, Grade II/III; Assistant Manager, Grade II/III … Lower Division Clerk” under Postal Manual)
Pay-scale: For example, the RTI manual table shows Postmaster Grade-II in Level 6 (“9300-34800, GP 4200”) and Postmaster Grade-III in Level 7 (“9300-34800, GP 4600”).
On 10 July 2019 (and a follow-up on 31 October 2019), the Department of Posts ordered that the Postmaster Cadre (Grades I/II/III) be merged with the General Line Cadre—so that Grade I personnel merged with LSG (Level 5), Grade II with HSG-II (Level 6), and Grade III with HSG-I (Level 7).
This means the distinct “Postmaster Grade I/II/III” titles are largely phased out and integrated into a unified “General Line” structure.
For Postmaster Grade-III, the rules indicated that 25% of Sr. Postmaster vacancies could be filled by promotion of Grade-III (with 2 years service) and 75% by Inspectors of Posts via LDCE.
Before the merger, there was a path: from lower grades → Postmaster Grade I/II/III → Senior Postmaster → potentially higher. After merger, the path aligns with the General Line cadre’s structure.
As an example for related cadres: Postal Assistants/Sorting Assistants were eligible (in one source) for Postmaster Grade 1 after 5 years service, and then to higher grades.
Because of the 2019 merger, if you are applying now you will likely apply under the revised Recruitment Rules for the “General Line” cadre (LSG/HSG-II/HSG-I) rather than separate Postmaster Grade I/II/III titles.
When you view notifications or do preparation, check whether the post you are targeting is still labelled “Postmaster Grade-I/II/III” or has been redesignated under LSG/HSG titles.
Always refer to the latest official Recruitment Rules / cadre restructuring documents for your circle.