PST Information Center

Background Investigations

PST Investigations offers a comprehensive background investigation package with services that include, but are not limited to:

Background Investigation

We have significant experience conducting pre-employment background investigations. Since 2006, we have conducted thousands of pre-employment background investigations ranging from entry-level to mid-manager to executive level positions.

  • Detailed Personal History Statement (PHS)
  • In-depth candidate interview
  • Reference interviews
  • Current & past employer checks
  • Client debrief
  • Detailed report

Additional Services


Records Checks

  • Criminal convictions
  • Outstanding warrants
  • Sex Offender registration
  • Social Security verification
  • Address verification
  • Driving record
  • Credit check
  • Education verification

Experience You Can Trust

At PST Investigations, we have a team of respected and trained retired law enforcement officers with extensive experience in pre-employment background investigations, complex criminal investigations, workplace misconduct investigations, and state-of-the-art interview techniques. View their credentials.

PST is a Washington licensed Private Investigative Agency and all of our investigators are licensed Private Investigators.

Our expertise covers a wide range of candidates, from entry-level to mid-manager, to Chief executive positions. We have conducted background investigations on the following types of candidates:

  • Police Officer
  • Firefighter
  • 911 Dispatcher
  • Corrections Officer
  • Fire Mechanic
  • Police Sergeant
  • Evidence Technician

  • Communications Manager
  • Records Manager
  • Fire Chief
  • Police Chief
  • Financial Manager
  • Operations Manager

  • Police Commander
  • Battalion Chief
  • Assistant Chief
  • Deputy Chief
  • Executive Director
  • City Manager

Client List

  • City of Bellevue
  • City of Bothell
  • City of Juneau, Alaska
  • City of Lake Stevens
  • City of Mill Creek
  • City of Mukilteo
  • City of Port Townsend
  • City of Snohomish
  • City of Sumner
  • City of Tumwater
  • City of Woodburn, Oregon
  • Port of Seattle
  • City of Wapato
  • Washington Association of Sheriffs & Police Chiefs
  • Evergreen State College
  • Tulalip Tribes
  • Kent Fire RFA
  • Lake Stevens Fire District
  • WA Dept. of Fish & Wildlife
  • City of Blaine
  • Town of Coupeville
  • City of Kirkland
  • City of Lynnwood
  • City of Milton
  • City of Orting
  • City of Medford, OR
  • Washington State Criminal Justice Training Commission
  • City of Poulsbo
  • City of Sultan
  • City of Tukwila
  • City of West Richland
  • City of Yakima
  • King County Sheriff's Office
  • Puyallup Tribes
  • Gig Harbor Fire & Medic One
  • East Olympia Fire
  • Clark County FD #6
  • City of Forks
  • City of Des Moines
  • City of Prosser
  • City of Lake Forest Park

Workplace Misconduct Investigations

We conduct objective, lawful, and independent investigations for our clients. Our expertise is in administrative workplace investigations related to public agencies, such as state, county and local governments, fire districts, school districts, utility districts, correctional facilities, 911 dispatch centers and others. Private companies will also benefit from our exceptional investigative skills and objectivity. With a wealth of experience and a reputation for upholding the highest levels of professionalism and ethics, we provide the most thorough and productive investigations, assessments and audits for your investment.

You may find yourself in a situation where, because of the personnel involved or the nature of the issue you are dealing with, it would be beneficial to bring in an independent, unbiased investigator. PST has the experience and services to assist in these types of delicate and important investigations. Our expertise includes third-party investigations, workplace investigations and internal affairs investigations.

Our investigation services start with close coordination with agency management to review contracts, policies and applicable regulations, determine the scope, timing and procedural rules of the investigation. Once the details of the investigation have been determined, PST Investigations will conduct interviews, provide transcriptions, provide updates and prepare a final report with the factual findings of the investigation. If needed, PST Investigations can offer support for appeals or other administrative matters subsequent to the investigation.

For more information on our investigative services, please visit PST Investigations at

PST-i logo

Investigator Biographies

At PST, we have a team of respected and trained retired law enforcement officials with extensive experience in pre-employment background investigations, complex criminal investigations, workplace investigations and state-of-the-art interview techniques.  Please click here to learn more about our excellent team of investigators.