
I've avoided doing extra work for a long time after doing a ton of it in my early 20s. As a non-union actor it can be a lot of standing/sitting around for very little, if any, pay.
When you enter the union world, you are treated slightly better. Your hours are monitored and you get paid a decent amount (depending on what it is your working on - more soon..). Still. It can be pretty thankless work.
Read more: Extra! Extra! | The NYC Actor