If they expect you to work harder because you have equity, then yes, you definately have a right to know what you are getting in return for your extra work. In

If they expect you to work harder because you have equity, then yes, you definately have a right to know what you are getting in return for your extra work. In reality: (A) The chances of your company ever having a "liquidity event" are slim. (B) Even if it did, your share of the windfall would probably be less (per hour of overtime) than if you just worked at a "normal" job. If you accept the above, what your equity is worth becomes somewhat irrelevant. You better be doing it because you love the work.