The pusher from MyCorp, Inc. - who am I?

Question

At MyCorp U.S., Inc. I'm the pusher - one of the main keyboards on the org chart, the one you want to follow. Without me the corporation would be a cruel, harsh place, and would quickly collapse. I'm generous and kind, but also have a sinister side. One time I was arrested for some back-room deal, quite a serious infraction actually. Everyone was shocked!

Who am I?

Edit: added "wordplay" tag (though that is a relatively minor element in the riddle).

Hint 1:

I am a thing, not a person.

Hint 2:

My corporation's name might work better in Latin.

Answer 1

You are a

Heart

At MyCorp U.S., Inc.

Corpus is latin for body - this is the corporation spoken of. I.e. My Corp U.S. = my Body

I'm the pusher - one of the main keyboards on the org chart,

I push the blood round the body.

the one you want to follow.

Usually good to follow your heart..

Without me the corporation would be a cruel, harsh place,

Need to have a good heart and not be cruel.

and would quickly collapse.

Without me working - the person will collapse.

I'm generous and kind, but also have a sinister side.

Although usually people have a generous and kind hearts, they can have cruel hearts too.

One time I was arrested for some back-room deal, quite a serious infraction actually.

The heart was arrested once (i.e. heart attack). The heart Ejection Fraction Rate measures the pumping of the heart. (Not sure about the back-room deal thing).

Everyone was shocked!

Naturally, after a heart attack an electric shock was administered with a defibrillator.

Answer 2

Are you:

electricity

pusher:

electricity is often analogized to water pressure; thus the sense of it being a "pusher"

main keyboard on the org chart:

I cannot make this connection

the one you want to follow:

you'd want electricity to be at the company first for lighting and HVAC; you'd turn the lights on before/as you entered a building.

without me the corporation would be a cruel, dark place, and would quickly collapse:

electricity -> lighting for the "dark" piece; HVAC for being a "cruel" place to work; and so if no one worked at a corporation, it may soon collapse.

generous and kind:

see above lighting and HVAC; also, electronics of all kinds (computers, cell phones) that enable people at a corporation to do work

have a sinister side:

the inherent risks of electricity (electrocution; short circuiting, etc)

arrested for some back-room deal:

by "arrested" I would imply "captured" or "stock-piled" as energy in UPS batteries; UPS' are often housed in a "back room"

everyone was shocked!

hopefully not by the UPS, but maybe by static electricity!