The short answer
Whether the officers standing your post work under a collective bargaining agreement is not a quality judgment in either direction. It is a structural fact about the labor behind the contract, and it changes four concrete things for you as a buyer: how the bill rate is built, how much you can move the schedule, what work the officer is and is not assigned to do, and what happens to the people on site when you change vendors.
Most buyers never have to decide this. In most U.S. markets, most contract security is non-union, and the question never comes up. It becomes a real decision in a specific set of situations: certain metros where the security labor market is heavily organized, certain building types where the property owner or tenant base expects it, public and institutional work carrying labor conditions in the solicitation, and projects governed by a labor agreement that covers site services.
This guide explains what actually changes for the buyer. It takes no position on unionization as a policy question, and it is not legal or labor-relations advice. Union status interacts with the National Labor Relations Act, state law, local ordinances, and the specific language of each agreement, and none of that is something a buying guide can resolve for your site. Bring counsel in before you sign anything with labor conditions attached.
See published guard rates before you talk to anyone →
What "union" means in contract security specifically
The most important thing to understand up front is where the agreement lives. In contract security, the collective bargaining agreement is between the security agency and the union. It is not between you and the union. You are buying hours from an employer whose labor costs and work rules are set partly by that agreement.
That distinction matters because it determines who you negotiate with and what is actually negotiable. When a union agency quotes you a rate, the wage floor, benefit contributions, premium pay, and many scheduling rules underneath that quote are already fixed by a contract you were not party to and cannot amend. What you are negotiating is the number of hours, the post configuration, and the agency's overhead and margin on top of a labor cost that has less give in it than a non-union quote does.
Security officers are also treated as a distinct category under federal labor law in a way that most other service occupations are not. Guards are generally kept in bargaining units separate from non-guard employees, and the unions certified to represent them are structured accordingly. The practical consequence for a buyer is that the security officers in your building may be organized on entirely different terms from the janitorial, engineering, or food service workers in the same building, under a different agreement with different expiration dates. Do not assume that because the building is "union" the security contract follows the same rules. Ask specifically.
The largest presence in organized private security in the United States is SEIU, which describes itself as the nation's largest union of security officers and organizes through regional affiliates. Its West Coast affiliate, SEIU-United Service Workers West, reports representing roughly 50,000 private security officers, and its East Coast counterpart 32BJ SEIU represents officers in commercial office towers and institutional properties in major East Coast cities. Contracts in this space are commonly multi-year and negotiated market by market rather than nationally, which is why the terms in Los Angeles and the terms in Philadelphia are not the same document.
Beyond that structural picture, be skeptical of any specific wage scale you read online, including on a vendor's website. Scales differ by market, by agreement, by post classification, and by contract year, and a number quoted without naming the agreement and its effective dates is not usable for budgeting.
Where the question actually comes up
Class A commercial office towers in organized metros. In several major markets, the building security workforce is substantially organized, and property managers in that market operate on that assumption. If you are a tenant in such a building, the security contract may not even be yours to choose. If you are the owner or manager, your peer set and your tenant expectations are the practical constraint.
Institutional and public-adjacent properties. Universities, hospitals, transit facilities, airports, and municipal buildings often sit in markets where security is organized, and their procurement processes sometimes carry labor conditions in the solicitation itself.
Public solicitations with labor conditions attached. Government contracts may impose wage determinations, benefit requirements, or worker retention obligations regardless of union status. These are legal requirements on the contract, not union rules, and they are frequently confused with one another. If you are bidding out public work, read the solicitation's labor clauses as their own subject.
Sites under a project labor agreement. On some large construction and development projects, a labor agreement governs work on the site. Whether it reaches site security services depends entirely on the scope language in that agreement. Read it rather than assuming.
Everything else. For a warehouse in an outer suburb, a retail location, a construction site in a right-to-work state, or a weekend event, the question usually does not arise, and the vendors bidding will be non-union without anyone raising it.
The four things that actually change for you
1. Bill rate composition
A security bill rate is built the same way everywhere: the officer's wage, plus statutory burden such as payroll taxes and workers' compensation, plus the agency's overhead, plus margin. Union status does not add a new line. It changes what goes into the existing ones and how much of it is fixed.
Under a collective bargaining agreement, the wage line has a floor and a scheduled progression, and the burden line often carries contributions to health and welfare and pension or retirement funds that a non-union agency may not fund at the same level or at all. Premium rules for holidays, overtime, and certain shifts may also be defined in the agreement rather than left to the agency's discretion. The result is generally a higher and less compressible labor cost per hour, and a rate that is more predictable across vendors bidding the same organized market because they are all pricing off similar labor terms.
That last point is worth sitting with. In a heavily organized market, competing union bids tend to cluster, because the labor cost underneath them is largely common. The real spread between bids is in overhead and supervision, not in what the officer is paid. In a non-union market the spread is much wider on both, which is why an unusually low non-union bid deserves a question about which line the money came out of rather than a signature.
2. Staffing flexibility
This is the change buyers underestimate. Collective bargaining agreements commonly address scheduling in ways that a non-union agency handles informally: how shifts are bid and assigned, seniority rights in assignment, how much notice a schedule change requires, minimum hours guarantees for a reporting officer, and what triggers premium pay.
For a fixed post that runs the same hours every week, none of this is a problem, and the stability can be an advantage because assignments are less likely to churn. For coverage that moves around, a last-minute add, a shift you want to cut back mid-week, an event that runs three hours long, the same rules that create stability create friction. That friction is not the agency being difficult. It is the agency complying with an agreement.
If your coverage need is genuinely variable, this is the single most important thing to price into the decision. Ask directly: what notice do you need to change or cancel a shift, and what does a change inside that window cost me?
3. Jurisdiction and scope of work
Agreements often define what work falls inside the security classification and what does not. In practice this shows up when a buyer asks an officer to do something adjacent to security: minor maintenance, package handling, moving furniture, light custodial work, operating equipment, or covering a front-desk concierge function.
Non-union agencies will often absorb these informally, sometimes to the buyer's detriment because it dilutes the security function. Under an agreement, the boundary is likely to be explicit, and crossing it can create a grievance. Neither outcome is inherently better. But it means your post orders need to be written to match the classification you are actually buying, not to a wish list that accumulates over the first six months. Get the full scope into the document at signing. What to include in a security guard contract walks through the clauses that matter.
4. Continuity when you change vendors
This is where union structure most often benefits the buyer, and it is the least discussed.
Where officers are organized and a successor agency inherits the agreement, or where a local worker-retention ordinance applies to building service workers, changing security vendors does not necessarily mean changing the people at your site. The officers who know your access control quirks, your tenants, and your loading dock may stay. What changes is the logo on the uniform and the entity on the invoice.
The mirror image is that you cannot simply replace an underperforming crew by switching vendors, because the crew may follow the post. Your remedy for individual performance runs through the agency's supervision and the agreement's disciplinary and grievance procedures, which take longer and require documentation. If you expect to solve a personnel problem by rebidding, confirm first whether that is even available to you. Our guide to switching security guard companies covers the rest of the transition mechanics.
Grievance procedure is also a real operational fact rather than a paperwork detail. A complaint about an officer typically follows defined steps with defined timelines. Build that into your expectations for how quickly a performance issue resolves.
Side by side
| Factor | Union-represented officers | Non-union officers |
|---|---|---|
| Who the labor agreement binds | Agency and union; you are not a party | No agreement; agency sets terms |
| Wage floor | Set by the agreement, scheduled progression | Set by the agency and local market |
| Benefits in the burden line | Often includes health and welfare and retirement fund contributions | Varies widely by agency, sometimes minimal |
| Bill rate level | Generally higher for equivalent coverage | Generally lower, wider spread between bids |
| Spread between competing bids | Narrower; labor cost is largely common | Wide; the difference is often in wage or burden |
| Schedule changes and cancellations | Notice and premium rules may be defined in the agreement | Handled agency by agency, usually more flexible |
| Assignment and seniority | Often governed by bid and seniority rules | Agency discretion |
| Scope of duties | Classification boundaries usually explicit | Often informal, negotiable with the agency |
| Officer turnover on the post | Often lower where the post is stable and assignments are bid | Varies enormously by agency and post type |
| Performance issues | Through supervision plus the grievance procedure | Through the agency, typically faster |
| Continuity when you rebid | Officers may stay through the vendor change | New vendor generally brings its own roster |
| Typical fit | Fixed institutional posts, organized metros, Class A properties | Variable coverage, events, projects, most other markets |
Read this as tradeoffs, not a scoreboard. Union structure buys stability, defined terms, and continuity, and it costs flexibility and rate headroom. Non-union structure buys flexibility and a lower entry rate, and it costs predictability and puts more of the quality burden on your vetting.
What does not change
Several things buyers sometimes attribute to union status are actually independent of it, and conflating them leads to bad vendor decisions.
Licensing. State licensing of the agency and registration of individual officers is a regulatory requirement that applies identically either way. A union agency is not more licensed, and a non-union agency is not less. Verify the company license in the state regulator's database yourself in both cases.
Insurance. General liability limits, workers' compensation at statutory limits, and your status as additional insured are contract terms you negotiate. Get the certificate from the broker, not from the agency, regardless of union status.
Training quality. Some agreements include training and advancement provisions, but state-mandated training applies to everyone, and site-specific training is a function of the agency's program and your post orders. Ask what the officer on your post is actually trained on.
Supervision. Field supervision is an overhead decision. It is the first thing squeezed by any agency competing on price, union or not. Ask both types the same question: how many documented supervisor visits per month, at what hours.
Turnover. Turnover is structurally high across contract security. Stable, bid assignments can reduce churn on a given post, but no vendor of either type is exempt. Ask for turnover on your specific post type and shift, not the company average.
Questions to ask any vendor
Put union and non-union bidders through the same process on the same post. A polished union proposal and a one-page independent quote are not comparable documents until you force them onto the same terms.
- •Are the officers who will staff this post covered by a collective bargaining agreement? Which one, and when does it expire?
- •What is the officer's wage on this post, and what is the bill rate? The ratio tells you the overhead stack.
- •What benefit contributions are in that rate, and are they fund contributions or agency-provided?
- •What notice do you need to change, add, or cancel a shift, and what does a change inside that window cost?
- •What duties fall outside the classification for this post?
- •If I rebid this contract, do the officers stay? Is there a successorship clause or a local retention ordinance in play?
- •What is the process and expected timeline if I want a specific officer removed from my site?
- •Will every officer be your direct employee, or will any of this be subcontracted?
Questions 4, 6, and 7 are the ones buyers skip and later regret. They are also the ones where the honest answer differs most between the two models.
Where an on-demand marketplace fits
Calvis is a marketplace, not a security agency. It vets independently licensed local agencies, verifies their credentials against state licensing databases, and lets you compare several of them for the same post on published flat hourly rates. The officers are employed and licensed by those agencies, and licensing is attributed to each agency through its state regulator, never to Calvis. Labor relations belong to each agency as the employer, and the marketplace takes no position on how any agency's workforce chooses to organize.
The practical value here is at the sizing stage. When you can see multiple vetted agencies quoting the same post side by side, differences in cost structure become visible before a sales conversation instead of after one, and you can match the contract term to the actual job rather than to a vendor's default. For coverage that is variable, seasonal, event-driven, or short-notice, that flexibility is usually the deciding factor.
The honest limit: if your property sits in a market or building class where organized security is the operating expectation, or if your solicitation carries labor conditions, that constraint governs, and you should be sourcing to it directly rather than shopping around it. A marketplace is not the right instrument for a contract with labor conditions baked into the specification.
For the adjacent structural decisions, national vs local security guard company covers sizing the vendor to the job, and in-house vs contract security guards covers whether to use an outside vendor at all. Union status is a third axis that cuts across both.
How to decide
If your building type, market, or solicitation effectively requires it, the decision is made. Source union agencies, verify the specific agreement and its expiration, and build your schedule and post orders around the work rules rather than discovering them in month three.
If your coverage is fixed, institutional, and long-running, the tradeoff generally favors stability. Defined terms, bid assignments, and continuity through a vendor change are worth real money on a post you intend to run for years.
If your coverage is variable, seasonal, event-driven, or short-notice, flexibility is the binding constraint, and the work rules that create stability elsewhere will cost you here. Match the term to the job and price the change and cancellation rules explicitly.
If the question has simply never come up at your site, it probably does not need to. Run the normal vendor comparison, verify licensing with the state regulator, get the certificate of insurance from the broker, and size the contract to the actual coverage need.
The throughline across all four: union status is one input into the rate and the rules, not a proxy for quality. Verify the license, read the term, and ask what changes when you need the schedule to move.
Compare vetted local agencies for your post →