OSHA 1926.51: Do Weekend Security Guards Count Toward Headcount?

Weekend security guards count toward the total worker headcount for portable toilet requirements under OSHA 1926.51. The OSHA construction sanitation standard applies to all employees present at the site, including non-construction personnel like security. The exemption for mobile crews with transportation readily available to nearby facilities does not apply to guards stationed on-site for their entire shift.

OSHA 1926.51 headcount rule
The standard requires one standard portable toilet for 20 or fewer workers. For 20 to 199 workers, the rule is one toilet seat and one urinal per 40 workers. If you have 200 or more workers, you need one toilet seat and one urinal per 50 workers. You must add the guards to your daily count.

Placement and service for weekend-only use
A construction site with weekend security may need a separate ADA-compliant portable toilet or a small cluster if the main bank is locked or inaccessible. The units must be on level ground with truck access for service visits. Weekly service frequency is still required even for light weekend use, because the holding tank and deodorizer need maintenance.

Options beyond a standard unit
For a long-term site with weekend guards, a deluxe portable toilet with a flushing bowl and sink provides better hygiene. A small restroom trailer is an option if you have power and water available. The ADA 5 percent cluster rule applies if you place multiple units for the guards.

Count every person on site. Post your guard count and weekend hours if you want a unit recommendation.