are in the workplace. Environmental noise can originate from various sources depending on the activity, location, and time. Environmental noise can be generated from transportation such as road, rail, and air traffic, or construction and building services, and even domestic and leisure activities. There is a legal limit on noise that the Environmental Noise is 70 dB(A) over 24-hours of average exposure. Similarly, the limit of Occupational Noise is 85 dB(A) per NIOSH, or 90 dB(A) per OSHA for an 8-hour work period. In order to enforce these limits, these are the methods to measure noise, including Sound Level Meter (SLM), Sound Level Meter App, Integrating Sound Level Meter (ISLM), Impulse Sound Level Meter (Impulse SLM), Noise Dosimeter, and Personal Sound Exposure Meter (PSEM). Sound Level Meter (SLM) measures the sound level at a single point of time and consequently requires multiple measurements to be taken at different times of the day. The SLM is primarily used for measuring relatively stable sound levels; there is increased difficulty in measuring the average sound exposure if the noise levels vary greatly. Sound Level Meter App is a program that can be downloaded to a mobile device. It receives noise through the phone’s built-in or external microphone and displays the sound level measurement from the app’s sound level meters and noise dosimeters. Integrating Sound Level Meter (ISLM) measures the equivalent sound levels within the measurement period. Because the ISLM measures noise in a particular area, it is difficult to measure a worker’s personal exposure as they move throughout a workspace. Impulse Sound Level Meter (Impulse SLM) measures the peak of each sound impulse. The most optimal conditions to measure the peaks occur when there is little background noise. Noise Dosimeter collects the sound level for a given point in time, as well as different sound levels across time. The noise dosimeter can measure personal exposure levels and can be used in the areas with a high risk of fire. Personal Sound Exposure Meter (PSEM) is worn by employees while they work. The advantage of the PSEM is that it eliminates the need for noise assessors to follow up with workers when the assessors measure the noise levels of the work areas. Excessive noise can lead to Occupational Hearing Loss. 12% of workers report having hearing difficulties, making this the third most common chronic disease in the U.S. Among these workers, 24% have hearing