Nps to ops for central government employees

You are not eligible in terms of the prevailing norms.

Sir , does that mean in my office a senior appointed at a earlier date will be deprived of the opportunity to switch over to OPS while my junior appointed at a later date will enjoy the benefit of OPS ? 

Your obsession with 'senior'  and 'junior' is rather incomprehensible. . The recruitment has been through different notifications. You are attempting to compare the incomparables.

Also, the so-called junior is in LDC cadre while you are, it appears, in a different cadre

Besides the oipinion of the learned expert Mr. Venu, you may clarify the date of advertisement to the post in which you were absorbed, if it was subsequent to introduction of NPS, you may not be eligible for switching over to the OPS.

You should understand the fact that when your post was advertised the new pension scheme was already in force and was duly enacted.

Whereas in the case of  junior who was appointed on the basis of the advertisement during which the OPS was prevalent, then your grievance on this is not justified and may not be maintainable even if you contemplate to elevate the matter legally

Sir, what about the fact that this Ex post facto (DoO&PW  letter dt 03/03/2023) change in eligibility criteria to avail OPS has deprived me of an opportunity to take an informed decision way back in 2003 wherein I too could have joined as an LDC to avail OPS rather than apply for an Engineering cadre commensurate with my qualification. 

what deptt has said.            

Simply denied to grant me & similarly placed employees the opportunity to switch over to OPS. Another fact worth noting is that  the MoD approval/release of vacancies ( for vacancies rising in  year 2000-2001 to 2003-2004) for direct recruitment to the post of Gr B, C & D was communicated to OFB way back in May 2003 i.e prior to the cut off date of 22/12/2003 . ( Both the non tech i.e LDC and us the technical group was recruited by OFB based on the MoD ) . It however turns out that the non-tech group happens to be very lucky that there recruitment ad was sent to davp prior to 22/12/2003 while for us it was sent in Nov.2004. Does not it point towards discrimination. How bad it is in the eyes of Law that a serious matter like eligibility for OPS is simply a matter of chance/luck as to whose ad has been sent to davp for publishing prior to 22/12/2003 and all these vide a Ex post facto order dated 03/03/2003 depriving the applicants to take a informed decision. It may be noted that the aforesaid MoD approval of May 2003 releases vacancies arising way back in 2000-2001 which points out to administrative delays of 02 yrs (approx). How strong can be the case for seeking judicial remedy?

"I too could have joined as an LDC to avail OPS rather than apply for an Engineering cadre commensurate with my qualification." 

You should be satisfied that you are emplyed in a post commensurate with your qualification and expertise, and thus enabling you to expand your horizon professionally,  than being too obsessed with post retirement benefits.

My level of job satisfaction is best left to me. A more objective professional answer was expected.

By not availing the opportunity available before you at that time, it can be understood that you very badly missed the bus.

However, not all doors are shut yet.

You still can look for a solution through due process of law.

You can make a representation to the employer followed by a writ petition before high court to get your grievances redressed.

you may better visit a lwyer in his office as you are not able to convey your viewpoimt here.