The number of toilets required is determined by the number of employees at the worksite. Companies with 15 or fewer employees are required to offer only one unisex bathroom and toilet with a locking door. From there OSHA requires as a minimum:
Two toilets for 16 to 35 employees.
Three toilets for 36 to 55 employees.
Four toilets for 56 to 80 employees.
Five toilets for 81 to 110 employees.
Six toilets for 111 to 150 employees.
One additional toilet for every 40 employees over 150. For example, a company with 400 employees would need to provide 13 toilets.
why there is always porta johns at worksites. federal and state laws
This. I worked on a job that had 4 portajohns for about 400 workers. Dudes were stepping out of the shitters and immediately puking on the sidewalk because it was so nasty.
https://www.shrm.org/resourcesandtools/hr-topics/risk-management/pages/osha-restroom-rules.aspx
Quantity
The number of toilets required is determined by the number of employees at the worksite. Companies with 15 or fewer employees are required to offer only one unisex bathroom and toilet with a locking door. From there OSHA requires as a minimum:
Two toilets for 16 to 35 employees.
Three toilets for 36 to 55 employees.
Four toilets for 56 to 80 employees.
Five toilets for 81 to 110 employees.
Six toilets for 111 to 150 employees.
One additional toilet for every 40 employees over 150. For example, a company with 400 employees would need to provide 13 toilets.
why there is always porta johns at worksites. federal and state laws
This. I worked on a job that had 4 portajohns for about 400 workers. Dudes were stepping out of the shitters and immediately puking on the sidewalk because it was so nasty.