No.

But my agents are.

You couldn't pay me enough to sacrifice so much of my life for someone else's business.

No. I can understand doing so if it's your own company and you have a significant % of the business. But if you are an employee it does not make sense, you will not gain the time back

what is this 'work' you speak of?

I did that and more when I was trying to get my startup off the ground, but never since and never again.