Employee List Research
Verified Employee Data Lists That Power Stronger Cases
Tristar Investigation researches and produces accurate, compliant lists of aggrieved employees for plaintiff employment attorneys handling wage-and-hour, Class Action and PAGA cases.
Common challenges we help firms solve include:
- Identifying employees at a target employer for an active case
- Replacing or supplementing a class representative
- Correcting or rebuilding incomplete or outdated employee lists
Our employee lists are accurate, current, and litigation-ready, built specifically for plaintiff employment law needs.
- Focused targeting: non-exempt employees within a 12-month or custom look-back period
- Comprehensive data fields: full names, mailing addresses, phone numbers, and email addresses (when available)
- Organized delivery: a clean, ready-to-use spreadsheet for mailers, call campaigns, or internal outreach
We specialize in locating hard-to-find employees with low data profiles particularly in high-turnover industries such as food service, hospitality, logistics/warehouse, agriculture, construction, and retail.
Witness Outreach
Professional, Bilingual Outreach That Builds Credible Witnesses
Tristar Investigation provides Witness Outreach for wage-and-hour, Class Action and PAGA cases interviewing and qualifying employees to deliver credible witnesses and class representatives for declarations or certification.
Law firms rely on Tristar to:
- Replace class representatives who have gone missing or withdrawn, and identify employees who support your theory of liability.
- Obtain timely declarations for motions, certification, or trial deadlines.
Our bilingual, trauma-informed outreach team manages every step with professionalism and care:
- Conducting interviews in English and Spanish and working evenings/weekends to reach shift workers.
- Using respectful communication that builds trust and participation.
- Providing concise interview summaries and witness status updates for attorney review.
We locate and connect with the right people fast, so your firm can build stronger wage-and-hour, Class Action, and PAGA cases, maximize leverage, and move them forward efficiently.
Employment Law Investigation Support
Tristar Investigation provides specialized support for plaintiff employment law firms helping attorneys identify, locate, and engage employees who are critical to building strong class and representative actions.
With more than 35 years of experience serving the California trial bar, our team combines advanced data research with bilingual, trauma-informed outreach to deliver verified employee information, accurate witness contact, and reliable declarations. From identifying non-exempt employees within a 12-month look-back period to conducting respectful after-hours interviews, Tristar ensures every step of your case moves forward efficiently and compliantly.
Why Choose Tristar?
For more than 35 years, Tristar Investigation has supported California’s plaintiff employment law community with reliable, compliant, and cost-effective investigative services. Our team combines legal insight with practical efficiency to keep your cases on track and your clients protected.
Trusted
Tristar has earned the trust of over 600 law firms statewide. As a licensed California detective agency (CA Lic. PI-10472), we’ve conducted thousands of investigations that help firms meet deadlines and deliver results with confidence.
Cost-Efficient
Our services often qualify as reimbursable case costs, helping firms manage expenses without compromising quality. Each investigation is scoped for precision, productivity, and value.
Productive
We integrate seamlessly with your team to save time and reduce workload delivering verified data, clear communication, and consistent progress updates that keep your cases moving efficiently.
Benefits of this Service
Tristar Investigation delivers reliable, attorney-focused investigative support designed to help plaintiff firms work faster and more effectively. From accurate employee data to organized witness outreach, our process provides verified information you can trust.
- Licensed California investigators with decades of employment law experience
- Accurate, compliant data delivered in a clean, ready-to-use format
- Trusted by more than 600 law firms across California
- Bilingual outreach and after-hours availability to reach shift workers
- Rolling updates as new employee data is verified
- Confidential and ethical handling of all sensitive information
Our Process
Tristar’s investigative process is built around accuracy, confidentiality, and responsiveness. Every engagement begins with a clear understanding of your firm’s goals and ends with actionable information ready for litigation use.
We treat every assignment with strict confidentiality and full legal compliance. All employee and witness data is sourced and handled according to California privacy standards. Our licensed investigators safeguard sensitive information at every step, ensuring your firm’s integrity and client trust remain protected.
Our team collects and verifies employee data through a combination of database research, field inquiries, and outreach. We focus on non-exempt employees within a 12-month or custom look-back period, delivering accurate contact details in an organized spreadsheet format. Rolling updates are provided as new information is confirmed, giving your team current, litigation-ready data.
Every case is unique. Whether you need a quick employee contact list, full witness outreach, or bilingual interviews across multiple locations, our process scales to your specific scope and timeline. You’ll receive consistent communication, clear deliverables, and reliable turnaround designed to fit seamlessly into your firm’s workflow.
What people are saying
“Bruce and the team at Tristar have been wonderful to work with. Beyond their professionalism, they produce excellent results, are prompt to respond, and are transparent in their communications with us.
Matthew J. Matern, Esq.
MATERN LAW GROUP, PC
“For over 20 years Bruce Robertson and the team at Tristar Investigation have responded promptly, identified the key issues, and can be relied on to dig deep until the task is accomplished. I would recommend Tristar to any colleague.”
Brian Panish, Esq.
PANISH, SHEA, RAVIPUDI LLP
“We value our relationship with Bruce Robertson and the Tristar Investigation team. They are responsive and always keep us informed. We can always count on them to deliver excellent results.”
Kane Moon, Esq.
MOON LAW GROUP, PC
Need more details? Contact us
Our team is ready to support your next employment law case with fast, accurate, and confidential investigative services. Whether you need verified employee data, outreach assistance, or a complete case review, Tristar provides dependable results that meet your firm’s timeline and compliance standards.
Frequently Asked Questions
How fast can you deliver an employee contact list?
Typical scopes deliver an initial list within 5–10 business days, with rolling updates as new employee data is verified and confirmed.
Are your investigations confidential?
Yes. All Tristar investigations are handled with strict confidentiality and full compliance with California privacy and employment laws. Information is securely stored and shared only with authorized client contacts.
What information is included in an employee list?
Each list includes full names, mailing addresses, phone numbers, and email addresses (when available) for non-exempt employees within your requested look-back period typically 12 months unless otherwise specified.
Can Tristar handle outreach directly with employees?
Yes. Our bilingual outreach team can contact and qualify employees on your behalf, conducting interviews after hours or on weekends when needed. You’ll receive concise summaries and witness updates for attorney review.
What industries do you specialize in?
We frequently locate employees in high-turnover industries such as food service, hospitality, logistics, agriculture, retail, and construction, where traditional data sources often fall short.
Are Tristar’s fees reimbursable?
In most cases, yes. Tristar’s investigative services are eligible as reimbursable case costs under California’s standards for Class Action and PAGA matters.
Other Employment Law Services
Tristar Investigation offers additional services that support employment litigation and help firms recover critical evidence and testimony when cases stall or key witnesses go missing.
Missing Plaintiff
When a plaintiff or witness becomes unreachable, Tristar discreetly locates and interviews them to recover essential declarations and keep your case on track. Our investigators use skip tracing, database research, and bilingual outreach to reestablish contact quickly...
Business Investigations
We conduct focused business background investigations to uncover company practices, timekeeping procedures, or payroll irregularities that may support your employment law claims. Each report is factual, compliant, and tailored to your case strategy...