NLRB Tightens Scrutiny on Union “Salting” Cases

If you’ve ever felt like labor law has a secret menu, “salting” is definitely on it. Not the fries kindthe
“a union organizer applies for a job” kind. And in 2025, the National Labor Relations Board (NLRB) sent a
clear signal: salting cases are getting a closer look, with investigators instructed to dig deeper, earlier,
and with more skepticism about whether an applicant truly wanted the jobor just wanted the employer to
step on a legal rake.

The headline takeaway: the NLRB’s Acting General Counsel issued updated guidance instructing Regions to
rigorously test whether alleged “salts” are bona fide job applicants before the agency invests time and
resources chasing a refusal-to-hire case. Translation for the workplace: employers still can’t discriminate
against applicants because of union affiliation, but the agency is also telling its field staff to verify that
applicants in salting campaigns actually sought employment in the first place.

What “Salting” Means (And Why It’s Legally Complicated)

“Salting” generally refers to a union member (sometimes paid by the union, sometimes not) applying for work
at a nonunion employer with the goal of organizing workers from the inside. It’s a classic organizing tactic,
especially in industries where job sites are fluid, hiring is frequent, and word travels fastconstruction,
warehousing, transportation, and hospitality come to mind.

Legally, salting sits at the crossroads of two ideas that often collide:

• Employees (and job applicants) have rights under the National Labor Relations Act (NLRA) to organize and support unions.
• Employers have legitimate interests in hiring people who actually want the job, will follow workplace rules, and aren’t gaming the system.

The U.S. Supreme Court has long recognized that paid union organizers can qualify as “employees” under the NLRA.
That means employers generally can’t refuse to hire someone just because they’re a union supporter or organizer.
But the law has also evolved to address a recurring concern: what if an “applicant” isn’t really applying in good
faith, and is instead trying to provoke a refusal to hire to generate unfair labor practice charges and financial
pressure?

The Legal Framework: The Three Big Building Blocks

1) Applicants are usually protected “employees”

The NLRA’s protections against discrimination “in regard to hire” would be pretty toothless if applicants had no
protection. So the baseline rule is broad: job applicants can be covered.

2) The refusal-to-hire playbook (the FES framework)

In many refusal-to-hire cases, the NLRB analyzes whether the employer was hiring (or had concrete plans to hire),
whether the applicant met the employer’s requirements (or whether those requirements were inconsistently applied),
and whether anti-union animus contributed to the decision. If those pieces are established, the case can move forward.

3) The “genuine interest” requirement in salting cases (Toering)

Salting cases have an extra speed bump. Under the NLRB’s decision in Toering Electric, the General Counsel must
prove not only that an application was submitted (or authorized), but also that the application reflected a
genuine interest in becoming employed. This was designed to prevent the NLRA’s processes from being used
primarily to inflict economic harm rather than to remedy unfair labor practices.

Think of it this way: the NLRA protects organizing. It doesn’t require the NLRB to treat every theatrical “application”
like a real one, especially if the record looks like someone auditioning for a lawsuit instead of a job.

What Changed: The NLRB’s Updated Guidance Tightens the Lens

In July 2025, the NLRB’s Acting General Counsel issued updated instructions for how Regions should investigate salting
cases. The memo doesn’t rewrite the NLRA or overrule Board precedent. But it matters because it tells NLRB investigators
and agency attorneys how to build (or not build) these caseswhat evidence to prioritize, what questions to ask, and when
to dismiss an allegation without a full-blown investigation.

Here are the practical shifts that employers, unions, and HR teams should understand.

1) Start with the charging party’s evidencebefore turning to the employer

The guidance emphasizes that Regions should focus their initial investigative efforts on evidence from the charging party.
The goal is to determine early whether the Toering requirements are met: was there a real application, and was there
genuine interest in employment?

Why does this matter? Because it changes the pacing. Instead of quickly pulling the employer into a lengthy, document-heavy
process, the Region is instructed to test the applicant’s bona fides first. If the applicant can’t clear the “genuine interest”
hurdle, the allegation may be dismissed without the employer ever being forced into the deep end.

2) “Mass applications” get special attentionauthorization is key

Salting campaigns sometimes involve unions submitting applications in batches. The guidance makes clear that mass submission,
by itself, doesn’t automatically prove a lack of genuine interest. But it also instructs Regions to determine whether each applicant
actually authorized submission on their behalfideally through testimony from both the applicant and the person who submitted the applications.

For employers, this is a double-edged sword: you can’t assume “batch application = fake,” but you can expect the NLRB to ask who clicked “submit”
and whether the applicant genuinely signed off.

3) Investigators are told to “deeply probe” genuine interestearly and thoroughly

The memo encourages Regions to conduct a robust inquiry into sincerity. A simple statement like “Yes, I would have accepted the job” isn’t enough
on its own. Instead, Regions are prompted to explore facts that make genuine interest more believable (or less believable), such as:

• Whether the applicant followed the employer’s normal application procedures
• Whether they arrived on time for interviews and engaged appropriately
• Whether they made follow-up inquiries about the application
• Whether they were actively seeking similar work elsewhere
• Whether their work history and experience align with the role

This is not “gotcha” trivia. It’s a credibility test. The point is to evaluate whether the applicant behaved like someone seeking employmentor like someone
trying to trigger a refusal and a charge.

4) Document requests expand beyond the application: social media, emails, union communications

The guidance tells Regions to request documentary evidence tied to genuine interest, including applications and resumes, but also social media posts and written
communicationsboth between applicant and employer and between applicant and unionif they discuss the employer or application process.

Practically, this means the “paper trail” can include posts and messages that reveal intent. If an applicant publicly frames the application as a strategy to pressure
an employer, that can become relevant to whether the applicant was a bona fide job seeker.

5) The memo gives vivid examples of “red flags”

One reason the guidance is making waves is that it’s unusually concrete. It points to examples from recent investigations where application materials included
eyebrow-raising contentlike listing “reading the National Labor Relations Act” as a hobby, or describing “skills” such as “applying pressure on employers to recognize our union”
and “filing charges.” If your resume reads like a legal complaint draft with hobbies, the agency is signaling it may treat that as evidence of insincere interest.

The memo also notes other irregularities that may strongly indicate a lack of genuine interest: missing references, numerous short employment stints, unexplained gaps, fictitious
employer names, suspicious email addresses, erroneous dates, overly vague job descriptions, or hostile/threatening remarks on an application.

None of these items alone automatically prove a case is invalid. But the direction is clear: Regions should scrutinize these details and not simply assume every applicant is a bona fide employee.

What Happens Next: Earlier Dismissals, Narrower Cases, and More Strategy

Early “triage” can stop a full investigation

After gathering relevant evidence from the charging party (and before seeking employer evidence), Regions are instructed to assess whether the applicant is entitled to protection under the
NLRA as a statutory employee. If the Region concludes there was no submitted/authorized application or no genuine interest in employment, the allegation should be dismissed (absent withdrawal),
and the Region should refrain from further investigation of that allegation.

That is a big deal in practice. It means salting allegations may be filtered earlierpotentially reducing the number of cases that mature into complaints and litigation.

Backpay gets a reality check (Oil Capitol)

Even when a salting case has merit, the guidance highlights a remedy issue that often drives settlement value: backpay. Under Oil Capitol Sheet Metal, the traditional assumption of indefinite
employment (backpay running until a valid offer of reinstatement) does not automatically apply to union organizers or salts.

Instead, the General Counsel must present affirmative evidence that the discriminatee would have worked for the employer for the backpay period claimed. If the evidence doesn’t support a long duration,
the remedy may shrinkand instatement may not be awarded if indefinite employment can’t be proven.

The memo encourages Regions to conduct a pre-complaint backpay investigation and resist basing calculations on unsubstantiated claims about how long someone would have stayed. The underlying logic is simple:
salts often have different employment patterns than typical applicants, and remedies should reflect actual lossesnot speculative ones.

When the facts are murky, Regions may elevate cases for review

If the evidence doesn’t clearly resolve key questionslike whether an application was authorized in a batch submission, or whether the applicant was genuinely interestedRegions are instructed to submit those
cases to the NLRB’s Division of Advice. That can slow the process and increase uncertainty, but it also signals that the agency wants consistency in how these edge cases are handled.

What This Means for Employers: Practical Compliance Without Panic

Employers often hear “salting” and immediately want to add a new policy titled: “No Salts Allowed.” Please do not do that. Your legal department will age five years overnight.
The smarter approach is to tighten your hiring process in lawful, neutral ways that apply to everyone.

1) Use objective, job-related hiring criteriaand apply them consistently

If your stated requirements are real, documented, and consistently applied, you’re in a stronger position. If your requirements are flexible depending on your mood, the weather, or whether someone mentions
the word “union,” you’re in a weaker position.

2) Document the hiring process like you’ll need it later (because you might)

Keep records of job postings, interview notes, scoring matrices, and the legitimate reasons candidates were or weren’t selected. The updated guidance may lead to earlier dismissals, but when a case proceeds,
documentation still makes or breaks credibility.

3) Train managers: union affiliation is not a lawful hiring filter

The guidance tightens scrutiny on whether an applicant is genuine. It does not create a “free pass” to refuse union applicants. Discriminating against applicants because of union activity remains unlawful.
Train interviewers to avoid union-focused questions, comments, or notes. (“Seems pro-union” is not a job qualification.)

4) Don’t improviseespecially not in writing

Some of the memo’s red-flag examples involve written content: antagonistic remarks, provocative statements, suspicious application packages. Employers should assume that texts, emails, and internal messages
could be reviewed later. Write like a grown-up, even on a Tuesday.

What This Means for Unions and Organizers: Cleaner Campaigns Win

If you’re organizing through salting, the updated guidance is a signal to keep the campaign disciplined:

• Make sure applicants can credibly show they wanted the job and were qualified.
• Ensure any batch submission is explicitly authorized and documented.
• Avoid application “Easter eggs” that scream litigation strategy instead of employment interest.
• Assume communications and public posts can become evidence about intent.

In other words: salting may still be protected, but “salting as performance art” is a riskier script under this approach.

Experiences From the Field: Realistic Scenarios and Lessons (Composite Examples)

The best way to understand how this guidance plays out is to look at common situations organizations run into. The examples below are compositesrealistic patterns that show up in workplace disputesrather than
any one employer’s story.

Scenario A: The construction contractor who “did everything right”… except the group chat

A nonunion contractor is hiring for multiple projects and receives several applications that appear coordinated. The hiring team applies its normal criteria and selects candidates with the most relevant
certifications and recent site experience. So far, so good. Then a supervisor drops a message in a group chat: “These are those union guys. Don’t hire them.”

Even if the employer’s selection decisions are defensible on paper, a stray message like that can become the spark that lights the whole file on fire. The new NLRB guidance encourages Regions to test applicant sincerity,
but it doesn’t erase evidence of discriminatory motive. Lesson: your process can be neutral, but your communications have to be, too.

Scenario B: The warehouse that ghosted applicants (and created its own problem)

A warehouse operator is overwhelmed with hiring volume. Applicants submit forms online and hear nothing. No rejection emails. No interview scheduling. No follow-up. Later, several applicants file a charge,
claiming they were never considered because they were union supporters.

Under the updated approach, Regions may ask: did these applicants genuinely seek employment? Did they follow up? Did they appear qualified? But the employer’s silence also becomes a fact. Employers that have a
consistent, documented applicant-tracking process can show who was reviewed, why, and what happened next. Employers that “wing it” often look like they’re hiding the balleven when they aren’t.
Lesson: a basic applicant workflow isn’t just HR hygiene; it’s legal risk control.

Scenario C: The “too-clever” resume that backfires

An applicant includes unusual statements in the application packet, like describing “filing charges” as a skill or framing the purpose of employment as pressuring the employer. Under the updated guidance,
investigators are explicitly told to scrutinize this kind of content as a sign of insincere interest. The result can be an earlier dismissal of the allegationbefore the employer is asked to produce much of anything.

Lesson for organizers: if you want NLRA protection as an applicant, behave like an applicant. If you want to write a manifesto, publish a blog post. (Ironically, you’re reading one right now.)

Scenario D: The employer who “screens for culture” and trips the wire

An employer uses informal “culture fit” screening with inconsistent questions. When a candidate mentions prior unionized experience, interviewers probe aggressively and document subjective notes like “seems like a troublemaker.”
The employer rejects the candidate and later faces a refusal-to-hire claim.

In a salting context, Regions will look at genuine interest evidence, including whether the applicant followed procedures and appeared qualified. But subjective, union-tinged notes can undermine the employer’s defense and suggest animus
contributed to the decision. Lesson: replace “vibes-based hiring” with structured interviews and job-related scoring. It’s less exciting, but so is litigation.

Across these scenarios, the theme is consistent: the NLRB is signaling more skepticism toward questionable applicant intent, but employers still need disciplined, neutral hiring practices. The best defenses are boring:
consistent criteria, clean documentation, and zero “anti-union” commentaryespecially in writing.

Conclusion: A Smaller Bullseye, Not a Free Pass

The NLRB’s updated guidance tightens scrutiny on union salting cases by pushing investigators to verifyearly and thoroughlywhether an applicant is a bona fide job seeker with genuine interest in employment.
It also reinforces that remedies like backpay in salting cases must be grounded in evidence, not assumptions.

For employers, the winning approach is not “anti-salt strategies.” It’s pro-process discipline: neutral hiring criteria, consistent application, careful documentation, and manager training that keeps union-related bias
out of decisions and out of messages. For unions, the guidance rewards clean, credible campaigns where authorization, applicant intent, and employment interest can be proven without gymnastics.

In short: the NLRB didn’t ban salt. It just told everyone to taste the soup before calling it a case.