To be considered a "confined space," a space must:

To be considered a "confined space," it must have limited or restricted means for entry or exit. This characteristic is essential because it distinguishes confined spaces from other work environments. The limited access can pose significant hazards to workers, making it crucial to recognize such spaces in order to implement appropriate safety measures.

Confined spaces typically require special precautions when entry is necessary, as they may contain conditions that are hazardous to workers. Such conditions can include poor ventilation, hazardous atmospheres, or the potential for engulfment. Recognizing the restricted means of entry or exit is vital for ensuring that workers are aware of the risks and can take steps to protect themselves.

Spaces designed for continuous occupancy are not considered confined because they are intended for regular use, allowing for adequate safety measures and escape routes. Similarly, a space that is too small to enter does not qualify as a confined space since it does not meet the definition of a space where work is performed. Therefore, the defining feature of limited or restricted means for entry or exit is what truly signifies a confined space.