Jurisdiction resources / United States
Working alone in Maryland
A starting point for heat stress at work.
Authority and scope
Heat stress at work
Maryland’s heat stress standard applies to covered indoor and outdoor work when the heat index is at least 80°F, subject to exceptions. At 90°F or higher, high-heat procedures include monitoring exposed employees for signs of heat illness through regular communication or observation. The rule is heat-specific, not a general working-alone standard.
This is one starting point for the work described, not a complete list of state or federal requirements. Check which agency and rules apply to the employer and task.
Put the guidance to work
Questions for your plan
Is the work covered, how will heat exposure be assessed, and who can monitor and respond to signs of heat illness at the worksite?
What to review
Check the regulation’s scope and exceptions, then review heat assessment, rest and cooling, monitoring, and emergency response. Under high-heat procedures, monitoring may use phone or radio, a buddy system, or another effective means of observation. Do not assume a check-in alone meets the full heat plan.
Some work requires another person on site. Remote monitoring does not replace that requirement or the organization's own assessment, training and emergency procedures.
Explore field service and utilitiesCheck the current source
Official sources
Sources listed November 4, 2026. Links and requirements can change.
Discuss your work
Talk through your team's plan
Be Safe can explain how check-ins, human monitoring and Emergency Contacts fit your team's work. Your organization remains responsible for determining its requirements and procedures.
Contact Be Safe