We serve all of California and the USA

Employment Law Class Action and PAGA Services

Tristar supports plaintiff employment law teams in two ways.

  • Employee List Research: We research and build employee lists for businesses you’re investigating or litigating against.
  • Witness Outreach: After Employee List Research, our bilingual outreach team contacts potential witnesses and conducts interviews.
Employee List Research

Data that supports early case clarity

Tristar compiles organized employee information for class members and aggrieved employees, allowing attorneys to navigate incomplete records, identify potential individuals of interest, and advance case planning with confidence.

Structured Data That Supports Your Case

  • Clear spreadsheets with names and available contact details
  • Conducted using methods compliant with state and federal privacy laws
  • Skilled at researching industries with high turnover, such as food service, labor, agriculture, and retail
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Witness Outreach

Reliable outreach that moves cases forward

Tristar’s Witness Outreach establishes direct contact with potential witnesses and declarants, confirming eligibility and gathering early case details attorneys rely on to assess participation, shape strategy, and move cases forward.

We Specialize in Witness Outreach and Interviews

  • Professional bilingual team that communicates effectively with potential witnesses
  • Engages class members and aggrieved employees effectively to promote cooperation
  • Provides clear interview summaries that make attorney review more efficient and relieve time pressures on legal teams
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Endorsed by Leading Employment Law Attorneys

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Matthew J. Matern, Esq.
MATERN LAW GROUP, PC
“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.”
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Brian Panish, Esq
PANISH, SHEA, RAVIPUDI LLP
“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.”
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Kane Moon, Esq.
MOON LAW GROUP, PC
“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.”

Speak with a Private Investigator

Talk through your situation with an experienced private investigator and get clear guidance. We’ll help you understand your options and determine the most effective way forward.
(310) 390-0947
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info@tristarpi.com

Employee List Research

Top Benefits

  • Organized Employee Data
  • Improved Case Planning
  • Reduced Delays
Overview​

Our Employee List Research for Class Action and PAGA cases provides attorneys with data needed at the start of a case. We compile usable names and contact details so firms can move forward without delays caused by incomplete or outdated records.

Organized Spreadsheets

Names, addresses, phone numbers, and available employment details are organized using consistent research methods before the list is delivered. This process helps reduce confusion, minimize gaps, and provide a clearer starting point for attorneys reviewing case involvement.

Why Reliable Lists Matter

Reliable employee lists help prevent delays, reduce uncertainty, and give attorneys a workable foundation for notices, outreach, declarations, and case preparation. Clear data strengthens early strategy and supports smoother case progression.

Employee Identification

We assist attorneys in identifying individuals who may be class members or aggrieved employees connected to the case. Each entry is organized with employment-related details such as job roles, locations, and relevant time periods to reflect the group involved in the case.

Incomplete or Conflicting Records

When employee records are incomplete or slow to arrive through discovery, we conduct focused research to develop a usable set of names and contact details. This helps firms avoid delays in early case planning.

Our Employee List Research Process

Our multi-step process is designed to organize employee information clearly for Class Action and PAGA cases. By collecting available records and reviewing them across trusted sources, we help attorneys develop usable employee lists that are thoughtfully compiled and easy to work from throughout the matter.
By focusing on accuracy, compliance, and efficient data resolution, we give attorneys a reliable foundation for notices, declarations, discovery, and litigation planning. This methodology also supports Class Action and PAGA witness identification needs by confirming identity and case relevance before outreach begins, ensuring attorneys work with complete employee information.
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Intake and Review
We begin by gathering the materials provided by the attorney, including rosters, payroll files, prior lists, spreadsheets, or available contact records. These documents form the baseline dataset that will be organized and prepared for employee list development.
Database Cross Referencing
Employee details are compared across approved, legally accessible data sources to identify inconsistencies in names, dates, or contact information. This step helps determine which entries may need clarification or additional research before the list is compiled.
Data Resolution
Our team works to address missing, outdated, or conflicting information by conducting focused research. We correct duplicates, fill in incomplete fields when possible, and add additional contact details such as addresses, phone numbers, or email addresses if they can be located.
Quality Control
A final organizational review is performed to ensure the dataset is clearly structured and easy to understand. This step helps attorneys avoid confusion and provides a clean, usable list for planning next steps in the case.
Delivery
The completed list is formatted into an easy-to-use spreadsheet containing any available contact information. This organized format supports attorneys during notices, early case preparation, and the transition to witness outreach when needed.

Employee List Research FAQ

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Employee list research is the process of developing a usable list of individuals connected to a Class Action or PAGA case. This work organizes names and available contact details, so attorneys have a clear starting point for early case planning and internal review.
Defense lists may be outdated, limited, or missing essential information. Employee list research helps attorneys when no class member list or aggrieved employee list is provided, when existing data cannot be used for early preparation, or when firms cannot wait for information to be produced through discovery.
Lists usually include names, addresses, phone numbers, email addresses, and other available contact points. These details help attorneys understand who may be connected to the case and support early evaluation and planning.
We use structured research methods and legally accessible information sources to gather available employee data, even in industries where records are inconsistent. This helps firms better identify potential class members or aggrieved employees related to the case.
Timelines vary based on the scope of the case and the condition of the data provided. Most projects begin promptly once materials are received, and updates are shared as information is gathered and organized into the developing list.

Witness Outreach

Top Benefits

  • Consistent Updates
  • Bilingual Communication
  • Higher Participation Rates
Purpose of Witness Outreach

Witness outreach gives attorneys early, reliable insight into who may serve as a witness or declarant in a Class Action or PAGA case. Through direct communication and focused preliminary information, attorneys can understand who can be reached, who is willing to participate, and where meaningful testimony may come from. This early clarity strengthens case planning and supports more effective declaration preparation.

Bilingual, Multi-Channel Outreach

Our outreach approach uses bilingual communication (English/Spanish) to reach witnesses effectively. By engaging individuals through multiple channels, we increase response rates and ensure that every witness feels understood and comfortable participating.

Respectful & Accessible Communication

Every interaction is handled with professionalism and discretion. Witnesses receive clear explanations, supportive guidance, and safe communication environments, resulting in improved cooperation and more meaningful participation.

Verified Contact Preparation

We begin by building the class member or aggrieved employee list using key employment details. By aligning the list with case-specific parameters, our team creates a well-targeted foundation that improves contact success and supports accurate witness outreach. This reduces delays, minimizes miscommunication, and helps ensure attorneys connect with the correct individuals.

Structured Interview Support

We schedule witness interviews, provide reminders, and guide witnesses through the process. With our legal witness interview services, attorneys receive timely, accurate information that contributes to more complete testimony and stronger case preparation.

Declaration & Follow-Up Coordination

Our team manages declaration coordination, follow-up communication, and progress tracking to keep witnesses engaged throughout the case. This steady communication improves reliability and allows attorneys to build stronger, more defensible declarations.

Our Witness Outreach Process

Initial Outreach

We begin outreach respectfully and in accordance with legal and ethical standards to encourage early engagement.

Follow-Ups

Our team re-engages responsive witnesses, answers questions, and maintains communication. This step prevents drop-off and supports ongoing participation throughout the litigation process.

Deliverables & Ethical Measures

We provide interview summaries, participation tracking, and declaration-ready documentation. If a witness becomes unresponsive, additional communication standards are consistent with employee outreach services' protocol.

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Verification

Before any contact is made, we confirm names and eligibility. This prevents miscommunication and ensures that outreach is directed only to individuals who are relevant to the case.

Interviews

When a witness responds, we conduct professional, compliant interviews to collect timelines, experiences, and foundational case details. Interview notes are captured accurately for attorney review.

Progress Updates

Attorneys receive structured updates that summarize outreach attempts, completed interviews, witness responsiveness, and key insights. These updates allow attorneys to make informed decisions quickly.

Witness Outreach FAQ

What do witness outreach services include from start to finish?
Our witness outreach covers multi-channel outreach attempts, scheduling and conducting professional interviews, managing follow-ups, documenting participation, and providing attorneys with structured summaries and declaration-ready materials.
We use validated databases, employment history sources, cross-referenced records, and targeted search methods to identify and confirm the correct individuals, even when employer data is outdated or incomplete.
Yes. Interviews follow strict confidentiality protocols and are conducted using professional language. All communication complies with employment-law requirements and attorney guidelines.
Yes. We deliver interview summaries, participation logs, and documentation needed to support witness declarations, including draft witness statements that attorneys use to prepare final declarations.
Most outreach cycles take a few weeks, and timing depends on witness availability, responsiveness, and case volume. Attorneys receive ongoing updates throughout the entire process.

Why Law Firms
Choose Tristar

Law firms rely on Tristar Investigation because we bring decades of focused experience supporting employment-law investigations. Our team combines accuracy, reliability, and structured workflows that make complex outreach and verification tasks efficient and dependable.
Attorneys trust us to manage critical case components with the same level of precision they expect inside the courtroom.
Throughout every project, clients receive consistent updates, practical insights, and strategies tailored to the case type, industry, and jurisdiction. This commitment to transparency and alignment supported by proven litigation support services is why so many firms choose Tristar Investigation to strengthen case preparation and reduce administrative burden.
Decades of Proven Experience
With more than 40 years of experience supporting employment-law cases, Tristar Investigation brings unmatched expertise to Class Action, PAGA, and wage-and-hour matters. Our long-standing industry knowledge helps attorneys navigate complex investigations with confidence.
Transparent Communication
Attorneys receive consistent updates, progress summaries, and actionable insights at every stage of the project. This level of transparency allows firms to make informed decisions and maintain momentum throughout litigation.
Accurate, Efficient Workflows
Our Employee List Research and Witness Outreach processes are built for precision. Every workflow is optimized for accuracy and speed, reducing attorney workload, and eliminating common data errors.

Legal Compliance, Confidentiality & Ethical Standards

Attorneys choose Tristar Investigation because every stage of our work is built on strict legal compliance and unwavering confidentiality. We understand the sensitivity of employment-law investigations, which is why we maintain high standards for data protection, accuracy, and professional conduct.
Our team follows all state and federal employment regulations, and every communication is handled with clarity, neutrality, and respect. From the first point of contact to final deliverables, we ensure outreach is conducted ethically and in accordance with attorney guidance. Sensitive information is safeguarded through controlled access, secure digital storage, and defined protocols that reduce risk and protect privacy.
Key Standards We Follow
  • Strict confidentiality and secure data handling
  • Full compliance with state and federal employment regulations
  • Ethical communication and conduct throughout the outreach process
  • Controlled access and secure storage of sensitive information
  • Documented workflows that align with legal outreach service standards

Industries & Case Types We Support

Tristar Investigation supports a wide range of employment-law matters, helping attorneys quickly determine whether our services align with their case needs. Our team works across multiple industries and specializes in cases involving complex worker populations.
Wage and hour disputes, including missed breaks and overtime violations
Class Action and PAGA claims involving class members and aggrieved employees across diverse worksites
Workplace violations including retaliation, scheduling, and pay issues
Industries such as retail, logistics, food service, healthcare, manufacturing, and hospitality
If you’re ready to begin, submit your case details and our team will review them promptly. All information is handled with strict confidentiality, and an investigator will reach out quickly to discuss next steps and available support options.
Request Support for Your Case

Other Services

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Business Investigations
Tristar Investigation conducts discreet investigations to help attorneys identify business ownership, trade names and subsidiaries. Our team performs careful fact-finding and verifies information, giving attorneys and businesses reliable insight for strategic decision-making, knowing exactly what the ownership and nature of the business is.
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Missing Plaintiff Services
We locate missing or unresponsive plaintiffs using targeted searches and verified data sources. By confirming details and providing timely updates, we help attorneys avoid delays and ensure cases move forward without unnecessary setbacks. Our investigators work to identify current contact information so legal teams can maintain case momentum.
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