Hello

Yes, EWS reservation is definitely beneficial.

This is because,

There's 10 % reservation for EWS category due to which cut off goes lower when compared to general/UR.

For example,

SSC CHSL teir 1 2020 cut off is given below:-

category                       cut off

From above it's clear that ews reservation is beneficial even in teir 1 of ssc chsl

To help you further,

Here's a brief of your ssc chsl examination pattern.

Your SSC CHSL examination is conducted in three levels or tiers which are listed below:-

----------------) tier -I  :- it is Computer Based examination and questions are asked from General Intelligence, English Language, , Quantitative Aptitude and General Awareness.

----------------) Tier - II  :- it is a descriptive examination and is conducted in pen and paper mode . You have to write  a letter or an application in 150  -  200 words and also   an  essay in  200  -  250 words  either in Hindi or English.

----------------)  tier - III:- it is a skill or typing test.

You can get detailed examination pattern by visiting the page provided below :-

https://competition.careers360.com/articles/ssc-chsl-exam-pattern

Thank you