Even in many IT industries, this culture is not there. Respecting others is very good and it is required. But at the same time, we need not lose our self-respect. Respect the seniors and other colleagues. be friendly with everybody. Don't shout on people unnecessarily. But don't be submissive to all. It is not required I think.
In all business and official letters too,the word sir is used to address the authority.
Yes today in many working places, the word is gradually diminishing, and people adress their colleagues whether junior or senior by their names. What about an education centre, we cannot call our mentors by their names. Sir is the most appropriate word for the male teachers and the same applies for female teachers as madam or ma'am.
Do what inspires you !!
" Be Good and Do Good "
No life without Sun
'Idhuvum Kadandhu Pogum "
Even this challenging situation would ease