Walthew Law Firm
Seattle, WA Courts in Washington
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About Walthew Law Firm
Walthew Law Firm is a Washington law firm based in Seattle, with a second office in Everett. It represents injured workers and accident victims across Western Washington. The firm states it has practiced for over 90 years, and its work centers on workers' compensation claims handled through the Washington State Department of Labor and Industries (L&I), personal injury cases, and Social Security Disability claims.
On the workers' compensation side, the firm assists clients with L&I benefits such as medical coverage, time loss compensation, permanent partial disability, vocational training, and pensions. It also handles denied or underpaid claims, occupational disease claims, and appeals of L&I decisions. Its personal injury work covers car, truck, motorcycle, bicycle, and pedestrian accidents, animal bites, defective products, premises liability, construction accidents, traumatic brain injury, and wrongful death.
The firm lists six attorneys and offers free initial consultations. It has staff fluent in Spanish, and its offices are open Monday through Friday. The main office is at 3000 1st Avenue in Seattle, with a second office at 2906 Colby Avenue, Suite 101, in Everett.
Editor's Review
VerifiedLawFirms editorialFocus and practice areas
Three areas of law carry most of the caseload here, and each one points toward people who are hurt or out of work. The firm handles workers' compensation claims under the Washington State Department of Labor and Industries, known across the state as L&I, along with personal injury cases and Social Security Disability claims. It represents injured workers and accident victims throughout Western Washington, and it works from offices in Seattle and Everett.
These three areas share a practical thread. Each one turns on medical evidence, on benefit rules, and on the timing of protests and appeals. In my opinion, that overlap is part of why one office builds all three together. A worker hurt on the job may also carry a disability claim, and the same team can read both files without a handoff to outside counsel.
The client base skews toward individuals rather than companies. People filing an L&I claim, families after a fatal crash, and workers whose bodies have worn down over years all fit the pattern the firm describes. That focus shapes the rest of the site, including the benefit terms it uses and the accident types it lists.
Inside the workers' compensation work
The firm focuses primarily on job injury claims, which follow rules particular to Washington.
Benefits and denied claims
Washington runs its own state fund for job injuries, so most claims move through L&I rather than a private carrier. The firm assists clients with the core benefits, and the list it names is specific: medical coverage, time loss compensation, permanent partial disability, vocational training, and pensions. It also takes on denied or underpaid claims and appeals of L&I decisions.
Those benefit names describe different moments in a recovery. Time loss compensation replaces part of a worker's wages while they cannot work. Permanent partial disability pays for lasting impairment that remains after treatment ends. Vocational training helps a worker move into different work when the old job is no longer possible, and a pension applies when someone cannot return to steady work at all. The firm's role is to press for the benefit that fits the medical picture.
A claim in Washington starts with a report of injury filed with L&I, which then accepts or rejects it and sets what the worker receives. When a worker disagrees with that ruling, the next steps are a protest and, if that does not settle it, an appeal to the Board of Industrial Insurance Appeals. That is the general path, not a claim about any single case. It explains why the firm treats denied benefits and appeals as their own lines of work.
Occupational disease claims
Occupational disease claims work differently from a single accident. They cover conditions that build over time, such as hearing loss or illness from exposure, where the link between the job and the harm has to be documented rather than witnessed. Washington law lets these claims proceed even years after the exposure, provided the medical link holds up, which is why documentation carries so much of the weight. Cases like these lean on medical records and a full work history, and the firm names them separately from injury claims.
The personal injury side
The accident work reaches well past car crashes, and the firm names the types it takes. Its personal injury practice covers car, truck, motorcycle, bicycle, and pedestrian accidents, plus animal bites, defective products, premises liability, and construction accidents. The same practice handles traumatic brain injury and wrongful death matters.
Most personal injury claims open with an insurance company well before any courtroom. A client gathers medical bills and records, the insurer weighs fault and damages, and a settlement follows when the figures line up. When they do not, the matter can move to a civil suit. This general pattern holds across personal injury work.
Washington uses a comparative fault rule, which means a person's recovery can be reduced by their own share of responsibility for a crash. That rule sits behind much of the back-and-forth with insurers over who caused what. It is one reason accident claims can take time even when the injuries are clear. The firm's named accident types, whether a bicycle crash or a construction site injury, all run into that same question of fault.
The higher-stakes matters
Traumatic brain injury and wrongful death cases usually carry more weight than a routine claim. They draw on expert testimony and long medical timelines, and they turn on proof of lasting loss to a person or a family. A firm that lists them alongside everyday accidents shows it prepares files at that level of detail. How each matter turns out still depends on its own facts.
Disability claims and the appeals path
Social Security Disability connects to the firm's other work because it also turns on proving that someone cannot hold a job. The firm handles these claims for clients across the region, next to its L&I and injury files. As a reviewer, I read the pairing of disability and workers' compensation as a sign the office is at ease with medical proof and benefit hearings.
Disability claims run through the Social Security Administration, and a denial at the first stage is common. A claimant can then ask for reconsideration and, after that, a hearing before an administrative law judge. Waits for a hearing can run many months, so the paperwork filed early shapes what the judge sees later. Each step adds waiting time, and representation that knows the sequence tends to help.
For many claimants the hearing stage is where a case is won or lost. An administrative law judge reviews the medical opinions and the record of past work before deciding. Having someone prepare that file and question the evidence changes how the day goes. The firm's habit of handling disability next to L&I means its staff sees these hearings regularly.
How the team is built
Six attorneys carry the firm's caseload, and the site names each one: Patrick C. Cook, Michael J. Costello, Jordan P. Costello, Kathleen K. Kindred, Jonathan K. Winemiller, and Christopher Sharpe. They appear together on the firm's attorneys page. Two of the six share the Costello surname.
A roster of six lawyers gives the firm room to cover its three practice areas at once. One attorney can carry an L&I appeal while another prepares an accident file for suit. That spread also means a client's matter has more than one person's calendar behind it. It suits a practice that runs benefit hearings, disability claims, and civil injury cases side by side.
Language access shows up in the staffing as well. The firm has staff fluent in Spanish, which counts in injury and disability work, where a client often needs to describe symptoms and job duties in fine detail. It keeps two offices, one in Seattle and one in Everett, so people in King County and Snohomish County both have a nearer place to meet.
What the record shows
Longevity is the clearest marker the firm puts forward. It states that it has practiced for over 90 years, a span the site also phrases as over nine decades. The site cites that stretch without naming a founding year, so the exact start date is not given.
A practice that has run that long has watched Washington's workers' compensation rules change more than once, and it has carried claims through shifts in how L&I and the courts weigh medical evidence. In my opinion, that continuity is worth a client's attention when choosing where to file. It points to a settled focus on injury, benefit, and disability work.
Where the firm shares information
Beyond the two offices, the firm keeps profiles on Facebook, LinkedIn, and YouTube. A video channel fits a practice that has to explain benefit rules to people meeting them for the first time. The mix of platforms gives the firm more than one way to reach people who are researching a claim before they call. The blog headlines run through L&I benefits, denied claims, and occupational disease, the same topics that sit at the center of the firm's practice.
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Christopher Sharpe
Jonathan K. Winemiller
Jordan P. Costello
Kathleen K. Kindred
Michael J. Costello
Patrick C. Cook
Contact Walthew Law Firm
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Website
www.walthew.com ↗Address
3000 1st AvenueSeattle, WA 98121
Map of 3000 1st Avenue, Seattle, WA (see the address above for a text alternative).