The Hidden Security Risks of After-Hours Deliveries, Cleaners, and Contractors

Published by the SecurU Team | Commercial Security Experts serving Kitchener-Waterloo, Cambridge, Guelph, Hamilton, and the Greater Toronto Area

Most business owners know who is in the building during the day. Staff are on-site, managers are present, deliveries are expected, and unusual activity is easier to notice. After hours, the picture becomes much less clear.

Cleaners, contractors, delivery drivers, maintenance technicians, fire and elevator service providers, security guards, and temporary workers may all need legitimate access. The issue is not that these people should never be trusted. The issue is that access often continues long after the original need is gone.

For many Ontario businesses, after-hours access is one of the least reviewed parts of the security program. Keys are copied, fobs are shared, contractor credentials remain active, doors are propped open, and no one checks the audit trail unless something goes missing.

That creates a quiet risk. The system may show that an authorized credential was used, but that does not always mean the right person entered, at the right time, for the right reason.

Key takeaways

• After-hours access should be treated as a security program, not an informal convenience.
• Keys and legacy fobs create long-term risk when they are not recovered or reviewed.
• Modern access control can limit access by person, door, time, role, and project duration.
• Video integration helps confirm who actually entered when a credential was used.
• Remote guarding and AI deterrence can help protect exterior zones and restricted areas after hours.

Who has access to your building after hours?

A good starting point is a simple inventory. Most commercial facilities have more after-hours access than leadership realizes.

• Cleaning crews who may move through offices, storage rooms, kitchens, washrooms, corridors, and staff areas.
• Contractors and trades who were originally granted access for a defined project but may still have active credentials months later.
• Delivery personnel accessing loading docks, receiving rooms, package areas, or service corridors.
• HVAC, fire, elevator, plumbing, electrical, and other maintenance technicians who need access to mechanical spaces and building systems.
• Security personnel or third-party guards who may have broad access by default.
• Property management or landlord representatives with master-level access across multiple tenant areas.

Any one of these access types can be legitimate. The risk appears when there is no clear owner, expiry date, review process, or video confirmation layer.

Why physical keys are still a problem

Physical keys are familiar, but they are difficult to control. If a key is lost, copied, or not returned, the building may remain vulnerable indefinitely. There is also no easy way to know when the key was used or who used it.

For a small office, this may seem manageable. For a larger commercial facility, multi-tenant building, warehouse, manufacturing plant, or retail property, key control becomes a major operational weakness.

When a cleaner leaves their company, a contractor finishes a project, or a staff member is terminated, the business should be able to remove access immediately. Physical keys make that difficult unless locks are changed, which is expensive and often delayed.

Where legacy card and fob systems fall short

Older card and fob systems are better than keys, but they often still depend on manual administration. Someone has to remember to deactivate the credential. Someone has to know the worker left. Someone has to review the list of active cards.

In busy operations, that step gets missed. A contractor who needed access for two weeks may still have access six months later. A cleaning company may rotate staff internally while the same card continues to circulate. A former employee may keep a fob that nobody deactivated.

The system may still look secure because access is credentialed. In reality, the credential list may no longer reflect who should be allowed inside.

What good after-hours access control looks like

Time-bounded credentials

A contractor should not need permanent access for a temporary project. Modern access control platforms, including Kantech hattrix, allow credentials to be issued for a defined period. If a project is scheduled from Monday to Friday, the credential can automatically expire at the end of that window.

Role-specific access

A cleaner may need access to office areas, washrooms, and staff corridors. They likely do not need access to server rooms, tool storage, inventory cages, management offices, or sensitive mechanical areas. Access should match the role, not the whole building.

Remote management

Facility managers should be able to add, remove, suspend, or update access without driving to the site. For businesses with multiple locations, remote management is not a convenience. It is what allows access control to keep up with real operations.

Mobile credentials

Mobile credentials can reduce the risk of copied cards or shared fobs. Access is tied to a specific mobile device and can be revoked centrally when the relationship ends.

Why audit trails matter

An audit trail gives managers a record of who entered, where they entered, and when. This becomes essential when something happens after hours.

If inventory is missing from a warehouse, a laptop disappears from an office, or a door is found unlocked in the morning, the access log can narrow the timeline. It can show which credential opened which door at what time. When access control is integrated with video, the manager can also review a clip of the person who actually entered.

That video layer matters because credential sharing is real. A log entry by itself may show that a card was used. Video helps confirm whether the cardholder was the person who used it.

After-hours exterior risk starts before the door

Many incidents begin outside the building. Parking lots, loading docks, trailer yards, garbage areas, exterior stairwells, service doors, and receiving areas are common risk points.

AI deterrence can help monitor these areas by detecting a person in a restricted exterior zone after hours and issuing an automated audio warning. This can move someone away from the property before they reach a door or damage equipment.

For higher-risk sites, remote guarding adds a human review layer. A monitoring professional can review the event, issue a live audio challenge, and escalate if the situation appears to be a real threat.

Contractor compliance and access should be connected

Many businesses require contractors to maintain insurance, WSIB clearance, certifications, or safety training. The problem is that compliance and access are often tracked separately. A contractor may have expired documentation but still hold active access to the building.

A better process links access review to contractor status. If a contractor is no longer active or documentation has expired, their access should be suspended until the issue is resolved.

A practical after-hours access checklist

• Create a full list of everyone with after-hours access.
• Identify which credentials are older than 90 days and confirm whether they are still needed.
• Remove access for former employees, old contractors, and expired vendor relationships.
• Use time-bounded access for cleaners, trades, and project-based contractors.
• Limit access by door, role, shift, and zone.
• Review after-hours access logs at least weekly.
• Confirm camera coverage at staff entrances, loading docks, receiving areas, and exterior doors.
• Connect access events with video wherever possible.
• Create a clear rule against propped doors and shared credentials.

How SecurU helps Ontario businesses close after-hours gaps

SecurU helps Ontario businesses review and upgrade after-hours access programs using modern access control, video surveillance, intrusion monitoring, AI deterrence, and remote guarding. The right solution depends on the site, the number of users, the type of third-party access, and the level of risk after hours. However this doesn’t mean internal theft or security should be an afterthought.

A good assessment should not only look at doors and cameras. It should look at how the business actually runs: who comes in after hours, who manages access, how credentials are removed, and what happens when an alert is triggered.

Find out what your after-hours access program is missing

SecurU’s free on-site security assessment includes a review of your current access control program, credential management practices, and after-hours camera coverage. We will identify practical gaps and recommend a scalable solution that fits your facility.

Serving Kitchener-Waterloo, Cambridge, Guelph, Hamilton, Mississauga, Burlington, Oakville, Milton, and surrounding areas.

securu.com | Book Your Free Assessment Today

Frequently Asked Questions

Why is after-hours access a security risk?

After-hours access is a risk because fewer people are present to notice unusual activity. Cleaners, contractors, deliveries, and maintenance workers may all have legitimate access, but if credentials are not reviewed or limited, access can continue after it is no longer needed.

Are keys worse than card access?

Keys are harder to manage because they cannot be deactivated remotely and do not create an audit trail. Card access is usually better, but only when credentials are reviewed, revoked, and assigned properly.

How often should businesses review contractor access?

A quarterly review is a practical baseline, but higher-risk facilities should review contractor and third-party credentials more often. Any project-based credential should have an expiry date from the beginning.

Can access control show who entered a building?

Access control can show which credential was used at a specific door and time. When integrated with video surveillance, managers can also review footage to confirm who actually entered.

What is time-bounded access?

Time-bounded access means a credential only works for a specific period, such as a shift, project, week, or service window. Once that period ends, the access expires automatically.

Can AI deterrence help with after-hours trespassing?

Yes. AI deterrence can detect a person in a restricted exterior area after hours and trigger an audio message. This can discourage trespassing before someone reaches a door, vehicle, loading dock, or fenced yard.

Does SecurU provide access control for contractors and cleaners?

Yes. SecurU can design access control programs that give contractors, cleaners, vendors, and staff the access they need while limiting where and when they can enter.

Written by

The SecurU Team

Commercial Security Experts | Puslinch, Ontario | Est. 1994

SecurU is an Ontario-based commercial security integrator with more than 30 years of experience helping Ontario businesses design and implement integrated access control, video surveillance, and monitoring programs. SecurU is ULC-certified with in-house installation and monitoring teams, with no third-party handoffs. Every engagement begins with a complimentary on-site assessment.