Sign of dummy

[j235]

I am calculating some regression with OLS and also I am using dummy (0 zero for all variables and 1 for only one variable).But sign of dummy in final equation is negative.
So my question is, does is important sign of dummy into regression or not?

[startz]

The sign of the dummy means the same thing the sign of any other variable means.

[j235]

My variables are in logs, this mean if dependent variable go up for 1% also and independent variables will go up if sign is positive. But what will happen if dummy have negative sign ? What is the statistical explanation ?

[startz]

If the dummy variable equals 1 the dependent variable will be lower than if the dummy variable equals 0.