It depends on where you are building and what you are building. Most of the time, though, it is considerate to consider installing a Noise At Work sign. This, and other construction site signage, can be very useful from a safety perspective. If you want to be able to say without a doubt that your business is safe for your staff, then you have to use as many labels and signs as you can.
This means that you remove any plausible deniability about whether or not the area was marked. Signage from a provider like CMT Equipment can make it easier for you to always have visible signage. This can also stop people from making silly decisions about noise pollution complaints. By having these clear signs, you make sure that people are aware.
