How do you handle time frames with contractors?

[Julie Groth]

Do any of you use some type of bonus system with your contractors? $x for early completion. Or, a penalty system for not completing on time?

Thanks!

[Che Chiu Wong]

Originally posted by @Julie Groth:

Do any of you use some type of bonus system with your contractors? $x for early completion. Or, a penalty system for not completing on time?

Thanks!

 Yeah, like most others, we work in a penalty system.  Meanwhile, the bonus system never seems to work to its effect. Anyone has success in that?