OSHA’s confined spaces in construction standard protects employees engaged in construction activities at a worksite with one or more confined spaces. All employers engaged in construction activities have a duty under the standard to make sure their employees do not enter a confined space, except when following the requirements of the standard.
The standard is found at 29 CFR 1926 Subpart AA §§1926.1200 through 1926.1213 —Confined Spaces in Construction.