When an employee leaves your company, you probably think about collecting their keys, disabling their email, and removing access to company systems. But there is one security step you should not overlook: your physical door locks.
If a former employee still has a working key, simply getting the key back may not eliminate the risk. Keys can be copied, misplaced, shared, or retained without your knowledge. Rekeying changes the internal configuration of a compatible lock so the old key no longer operates it. For many Denver businesses, this can be a practical way to regain control of physical access without replacing every lock.
Why Employee Turnover Can Create a Security Risk
You cannot always know what happened to a business key after it left your control. An employee may have made a duplicate, given a key to someone else, or lost it before returning it.
The risk becomes more significant when the former employee had access to sensitive areas such as:
- Offices containing confidential records
- Storage rooms
- Cash-handling areas
- Equipment rooms
- Server or IT spaces
- Supply areas
- Exterior entrances
- Restricted employee-only sections
Even when an employee leaves on good terms, your access list should change with your staffing.
A simple rule is useful: when you no longer trust a key to remain exclusively under your control, consider rekeying the lock.
What Does Rekeying a Business Lock Do?
Rekeying changes the pins or other internal components inside a compatible lock cylinder so the existing key will no longer operate it. The lock hardware can often remain in place while you receive a new key configuration.
That makes rekeying different from replacing a lock.
If your existing hardware is in good condition and you simply need to invalidate old keys, rekeying can be an efficient solution. A professional commercial lock rekeying service in Denver can assess your existing hardware and determine whether rekeying is appropriate.
Should You Rekey Every Lock?
Not necessarily. Start by identifying exactly what the departing employee could access.
If they had a key that opened only their office, that door may be your immediate priority. If they carried a master key, however, the situation is more serious because one key may have provided access to multiple areas.
You should review:
- Which keys the employee possessed.
- Which doors those keys opened.
- Whether duplicate keys may exist.
- Whether other employees share those locks.
- Whether the locks are still in good condition.
- Whether your business uses a master key system.
A professional Denver Locksmith can help you determine which cylinders need to be rekeyed and whether your current key system should be reorganized.
When Lock Replacement Makes More Sense
Rekeying is not always the best answer.
If a lock is damaged, severely worn, outdated, or repeatedly malfunctioning, replacement may provide better long-term security. You may also want to upgrade if your business has outgrown traditional keys and would benefit from keypad, electronic, or access-control technology.
For example, if several employees regularly need different levels of access, a master key system can provide more structured control. APEX Locksmith Denver offers commercial master key solutions designed around different access levels and business needs.
For damaged or failing commercial hardware, professional commercial door lock repair and replacement can address both the immediate problem and longer-term security concerns.
What If the Employee Lost the Key?
A lost business key deserves the same attention as an unreturned key.
You may not know who found it or whether a copy was made before it disappeared. Instead of hoping the key never gets used, consider treating it as a compromised credential.
Rekeying the affected locks can invalidate the missing key while allowing you to keep suitable existing hardware. This is particularly useful when the lock itself remains in good working condition.
The same principle applies if a key was stolen or if you suspect an unauthorized duplicate exists.
Consider Your Entire Access System
Physical keys are only one part of business security.
If your company uses keypads, card readers, proximity credentials, or other electronic systems, employee offboarding should include removing that person’s electronic access as well. Modern commercial access control systems can make it easier to manage who is authorized to enter specific areas as staffing changes.
The goal is simple: every person should have only the access they currently need to perform their job.
This approach also helps you avoid a common mistake—changing a lock but forgetting that a former employee still has access through another entrance or system.
Build Rekeying Into Your Employee Offboarding Process
You do not have to wait for a security incident before reviewing your locks.
Create a standard offboarding checklist that includes:
- Collecting all company keys
- Identifying keys that were lost or unreturned
- Reviewing master-key assignments
- Removing electronic access
- Rekeying compromised locks
- Updating your key-control records
- Issuing replacement keys only to authorized employees
This makes security more consistent and reduces the chance that a rushed employee departure leaves an overlooked access point behind.
Why Work With a Professional Locksmith?
Commercial locks can differ significantly from residential hardware. Your business may have mortise locks, high-security cylinders, master key systems, panic hardware, electronic locks, or other specialized equipment.
A professional Locksmith Denver service can evaluate the existing system instead of automatically replacing everything. APEX Locksmith Denver provides commercial locksmith solutions including rekeying, lock installation, master key systems, and high-security options.
Professional assessment can also help you decide whether rekeying is sufficient or whether replacement or access-control upgrades make more sense.
FAQs
- Should I rekey my business after every employee leaves?
Not always. Consider rekeying when the employee had access to sensitive areas, failed to return keys, lost a key, or may have had duplicate keys made. - Is rekeying cheaper than replacing commercial locks?
Often, yes, when the existing locks are compatible and in good condition. Rekeying changes the lock’s internal key configuration without necessarily replacing the entire hardware. - What if a former employee returns their key?
Returning the key reduces the risk, but it does not prove that no duplicate exists. For sensitive areas, rekeying can provide stronger certainty that the old key no longer works. - Can a master key system be rekeyed after employee turnover?
Yes, depending on the system. A locksmith can evaluate the existing setup and determine how to change access while preserving appropriate access levels for authorized personnel. - When should I replace rather than rekey a lock?
Replacement may be preferable when hardware is damaged, worn out, outdated, repeatedly malfunctioning, or when you want to upgrade to higher-security or electronic access technology.
Protect Your Business After Employee Turnover
An employee leaving your company is a natural part of running a business, but their physical access should not remain active indefinitely. If you are unsure whether an old key can still open an important door, do not guess.
APEX Locksmith Denver can evaluate your commercial locks, rekey compatible hardware, and help you improve access control. For dependable commercial locksmith services in Denver, take action before an old key becomes a security problem.
Your former employee may have left the company—but your business should make sure their access left with them.
