someone in the workplace who will agree to anything and always does what they are told

Phrase meaning that a deceased cannot rest in peace until society changes due to the circumstances of a death.

your party counterpart that will agree to *anything* regardless of how crazy or stupid - and sometimes illegal - it is, who can meet or beat your intoxication level and still remain as coherent as you are

A yes man is a person who agrees to every opportunity they come across, no matter how crazy it may seem and they do not weigh the consequences.

Yes man(no spoilers) is also a movie that was produced in 2008 starring Jim Carrey. In this movie he makes a conevant with himself to agree to any opportunity that he may come across.

Some people believe they are living life this way by opening up every possible gate to a better future.

Someone who always agrees with authority and does what he's told.

Someone who agrees to do a lot of things

Urban dictionary editors who accept any definition that comes along. It is not known why people do this but theories include:
i) they are attempting to get 100% acceptance stats to look 'kool'
ii) they do not like hurting peoples feelings by saying 'no'
iii) they are dumb

plural: yesmen