Reporting Suspicious Activity Toolbox Talk

Suspicious activity on a construction site can include unknown people, vehicles that do not belong, someone checking gates or trailers, missing tools, damaged locks, or people entering restricted areas. Ignoring these signs can lead to theft, vandalism, trespassing, equipment damage, or workers being put in unsafe situations.

This talk focuses on how to recognize suspicious activity, report it quickly, avoid unsafe confrontations, and help keep the jobsite secure during the shift and after hours.

Why This Matters

• Early reporting can prevent theft, vandalism, trespassing, and damage to tools, materials, and equipment.
• Unknown people on site may not know the hazards, PPE rules, restricted areas, or emergency procedures.
• Suspicious vehicles can block access points, scout storage areas, or create struck-by risks near workers.
• Fast reporting helps supervisors, security, or law enforcement respond before the situation gets worse.
• Clear information from the crew helps protect the site, the public, and everyone working nearby.

Common Hazards

• Unknown people walking through gates, fence gaps, trailers, laydown yards, or unfinished areas.
• Vehicles circling the site, parking near gates, blocking access, or entering without approval.
• People taking photos of tools, equipment, storage containers, access points, or security cameras without a clear reason.
• Damaged locks, cut chains, open containers, broken fence panels, or signs of forced entry.
• Missing tools, fuel, copper, batteries, equipment keys, or small equipment.
• Workers confronting suspicious people alone or getting too close to an unsafe situation.
• Suspicious activity happening during shift change, lunch, deliveries, bad weather, or after lighting conditions change.

Safety Checklist

Before Work Begins

• Review who to contact for security concerns, including the foreman, supervisor, site security, or emergency services.
• Confirm the approved entry points, restricted areas, visitor process, and delivery check-in location.
• Check gates, fencing, trailers, storage containers, equipment yards, and fuel areas for signs of tampering.
• Make sure workers know how to describe a person, vehicle, location, time, and direction of travel when reporting.
• Identify high-risk areas such as public-facing fence lines, dark corners, parking areas, and material storage zones.

During Work

• Report unknown people, vehicles, open gates, damaged locks, or signs of tampering right away.
• Do not confront suspicious people alone or put yourself in a position where you cannot safely leave.
• Keep a safe distance and observe details such as clothing, vehicle color, license plate, company markings, and location.
• Direct visitors and vendors to the proper check-in point instead of letting them continue through the site.
• Secure tools, keys, fuel, batteries, ladders, and small equipment when leaving the work area.
• Document concerns with the time, location, what was seen, and who was notified.
• Notify supervision if suspicious activity is repeated, escalating, or tied to a specific gate, trailer, or storage area.

Crew Talking Points

• Who should the crew notify first if they see suspicious activity?
• Which areas of the site are most exposed to trespassing, theft, or unauthorized access?
• What details should workers try to remember when reporting a person or vehicle?
• What should workers do if someone refuses to check in or leave a restricted area?
• Are there any recent thefts, damaged locks, open gates, or security concerns the crew needs to know about?
• Speak up if you have noticed unknown vehicles, people near the fence line, missing tools, or anything that does not look right.

Stop Work If

• An unknown person enters an active work area, equipment route, excavation, roof, or restricted zone.
• Someone becomes aggressive, refuses to leave, or creates a threat to workers or the public.
• A suspicious vehicle blocks a gate, emergency access route, equipment path, or public roadway.
• The crew finds signs of forced entry, theft, vandalism, damaged locks, or tampering with equipment.
• Workers cannot safely continue because of an unsecured area, unknown person, or active security concern.

Final Reminder

Do not ignore something that feels off. Report suspicious activity early, keep your distance, give clear details, and let supervision or security handle it.