Aaron Osten

Santa Monica, California
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Aaron Osten plays an instrumental role in the success of Greene Broillet & Wheeler's trial team. Aaron's trial practice focuses on catastrophic personal injury, business and employment litigation, wrongful death and legal malpractice. Aaron has helped effectively litigate and settle a wide range of cases for the firm.

Outside the courtroom, Aaron is a competitive surfer, and shares his passion for surfing by teaching surfing to Veterans who suffer from disabilities such as PTSD. Aaron is also involved in the Animal Legal Defense Fund, and spends time outside of litigation advocating for legislation opposing animal cruelty.

Aaron's unwavering commitment to justice helped achieve a $7 million jury verdict in a sexual harassment and wrongful termination case involving a whistleblower who sued celebrity yoga guru Bikram Choudhury. He also obtained a $5 million settlement in a legal malpractice case that involved a lawyer who failed to advise a hedge fund client on SEC regulations.

Aaron secured a multimillion-dollar jury verdict in a wrongful termination/whistleblower retaliation claim on behalf of a cancer research doctor, who had been terminated after refusing to fraudulently obtain NIH funds.
In a premises liability lawsuit that settled for $4 million, Aaron helped represent the employee of an independent contractor who suffered paraplegia after being struck by falling machinery at a job site.

Aaron attended San Diego State University, where he earned a Bachelor of Arts in English and graduated with Honors. He also surfed competitively and helped lead SDSU to the Collegiate National Championships. He then attended Loyola Law School where he earned his J.D. While studying at Loyola, Aaron spent a summer in Costa Rica studying Environmental Law and International Human Rights Law. Aaron is a member of the American Association for Justice, the Association of Business Trial Lawyers, Consumer Attorneys Association of Los Angeles, Consumer Attorneys of California and the Association of Surfing Lawyers. Aaron is a member of the State Bar of California as well as admitted to the U.S. District Court Central District of California.

The legal doctrine barring recovery in tort for employees of independent contractors is well known under Privette v. Superior Court, 5 Cal. 4th 689 (1995) - which makes the 2nd District Court of Appeal's decision to publish its recent opinion in Al Khosh v. Staples Construction Company, Inc., 4 Cal. App. 5th 712 (2016), all the more interesting. Cases are meant to be published when they add a meaningful expansion to existing law or provide clarity to contested issues. Khosh does nothing of the sort. The decision is not only wrong on the merits but it is so strikingly devoid of any substantive analysis and legal authority that one wonders what value it had in being turned into a published decision. It is little wonder that efforts are currently underway to appeal and to de-publish this odd opinion.

In Khosh, a subcontractor was injured while installing switchgear for a backup electrical system at California State University, Channel Islands. Staples Construction Company, the general contractor, was contractually required to "exercise precaution at all times for the protection of persons on their property ... to retain a competent, full-time, on-site superintendent to ... direct the project at all times" and was "exclusively responsible" for safety of subcontractors and required to submit "comprehensive written work plans for all activities affecting University Operations, including utility shutdowns."

Prior to commencing its work, the subcontractor told Staples it would need a shutdown of the electrical system in order to perform its work. Yet, on the day of the incident, Staples failed to have an on-site superintendent present to direct the project, and failed to prepare any written work plans for the work; two specific promises made by Staples. The subcontractor arrived at the work site two hours prior to the scheduled shutdown, gained access to the site from university personnel, began working on the energized switchboard, and sustained severe injuries when an electrical arc flash occurred.

One exception to Privette is to show the contractor: (1) retained control over the work, and (2) affirmatively contributed to the worker's injuries. Tverberg v. Fillner Const., Inc., 202 Cal. App. 4th 1439, 1448 (2012); Kinsman v. Unocal Corp., 37 Cal. 4th 659, 671 (2005); SeaBright Ins. Co. v. US Airways, Inc., 52 Cal. 4th 590, 601 (2011).

The trial court entered summary judgment for Staples, and the appellate court confirmed, finding that "Khosh presented competent evidence that Staples retained control over safety" but that "there is no evidence Staples affirmatively contributed to Khosh's injury." The court wrote, "an affirmative contribution may take the form of directing the contractor about the manner or performance of the work, directing that the work be done by a particular mode, or actively participating in how the job is done. Evidence of Staples' omissions does not create a triable issue of fact regarding affirmative contribution." (Citation omitted.) From this point, the opinion enters a tailspin.

The court's analysis on affirmative contribution is scant and troubling: "When a hirer promises to undertake a particular safety measure, the negligent failure to fulfill that specific promise may constitute an affirmative contribution ... but there was no specific promise here." Khosh incredibly relies on Michael v. Denbeste Transportation, Inc., 137 Cal. App. 4th 1082 (2006). In that case, only a general promise to be "responsible for safety" existed, which the court ruled did not qualify as a "promise to undertake a particular safety measure." Staples' failure to fulfill two specific promises is simply disregarded, despite being the critical and pivotal question of whether there was an affirmative contribution by Staples. 

A critical exception to Privette is the liability of a general contractor based upon actionable omissions. A host of cases supports this exception: Ray v. Silverado Constructors, 98 Cal. App. 4th 1120 (2002), McKown v. Wal-Mart Stores, Inc., 27 Cal. 4th 219 (2002), and Hooker v. Department of Transportation, 27 Cal. 4th 198, 212 n.3 (2002). As Hooker states: "[A]ffirmative contribution need not always be in the form of actively directing a contractor or contractor's employee. There will be times when a hirer will be liable for its omissions. For example, if the hirer promises to undertake a particular safety measure, then the hirer's negligent failure to do so should result in liability if such negligence leads to an employee injury." (Emphasis added.)

Khosh contains no meaningful discussion of this authority.

In Ray, the employee of a subcontractor was killed when debris from a bridge was blown off during a windstorm and struck the employee. The general contractor argued it was entitled to summary judgment because the subcontractor assumed responsibility over safety of its employees and failed to secure the very piece of debris which killed their worker. The court acknowledged the same, but held the general contractor improperly failed to exercise its independent retained duty to shut down roads during a windstorm. The court found that because general contractor had the duty to close the road and failed to exercise that duty it could not invoke Privette. The court also noted it improper to fixate on the words "affirmative conduct" and discount the words "affirmatively contributed." Hooker made clear that an affirmative contribution is what is key."

In Khosh, the plaintiff also argued that Staples breached a non-delegable duty arising under statute. The court rejected this argument on the premise that the hirer of an independent contractor presumptively delegates to that contractor the duty to provide a safe work environment for the contractor's employees, including the duty to comply with statutory requirements. SeaBright Ins. Co. v. US Airways, Inc., 52 Cal. 4th 590, 600 (2011).

Yet Khosh reasoned that even if the statutes had imposed non-delegable duties, breach of such duties were subject to the "affirmative contribution" test, which the plaintiff failed to satisfy because of "the reasons set forth above." But "the reasons set forth above" are bare conclusions devoid of any basis. The several obvious reasons why Staples' omissions could have affirmatively contributed to the incident (a job superintendent and/or written work plans would have at least ensured the equipment was de-energized prior to work commencing) are simply never discussed in Khosh.

Despite its recent publication, Khosh should not be read as breaking new ground. The absence of any meaningful legal or factual analysis dooms its viability as a legitimate source of authority. Further, the verdict is still out as to whether this case will remain good law or a published decision. Any party relying on Khosh does so at its own peril.  

Aaron L. Osten is an attorney with Greene Broillet & Wheeler LLP.

Areas of Practice

  • Catastrophic Personal Injury
  • Business and Employment Litigation
  • Wrongful Death
  • Legal Malpractice

Bar Admissions

  • California
  • U.S. District Court Central District of California


  • Loyola Law School, Los Angeles, California
    • J.D.
    • Honors: Published works: “Privette Doctrine Ruling Has No Business Being Published”, Los Angeles Daily Journal, Dec. 29, 2016
  • San Diego State University
    • Bachelor of Arts
    • Honors: With Honors
    • Major: English

Published Works

Professional Associations and Memberships

  • American Association for Justice Association of Business Trial Lawyers
  • Consumer Attorneys Association of Los Angeles
  • Consumer Attorneys of California Association of Surfing Lawyers

Community Involvement

  • Actively involved in the Jimmy Miller Memorial Foundation, a non-profit organization which uses ocean therapy to treat and rehabilitate returning veterans suffering from PTSD