Attorneys

Timothy B. Armstrong

A graduate with Honors from the University of California at Los Angeles in 1982 and from Loyola University School of Law in 1985. Mr. Armstrong began his legal career with the law firm of Matthew, Hodges & Kelley handling civil litigation. In 1987 he became an associate with Johnson, Rifenbark & Wylie, handling both workers compensation and civil liability, as well as subrogation matters. In 1998 Mr. Armstrong, and Jeffrey Sigel, formed their own firm to represent employers in all aspects of workers compensation and subrogation matters. Mr. Armstrong makes presentations to self‑insured employers, personnel directors, risk managers, and other attorneys concerning current changes and trends in the workers compensation field. These seminars and presentations are made both on an informal basis and in more formal settings as arranged by Lorman Education Services. In addition he presents seminars to general contractors on behalf of the Associated General Contractors of California and Safely & Health Council. Mr. Armstrong has been certified by the State Bar of California Board of Legal Specialization as a Certified Specialist in Worker's Compensation Law.  Mr. Armstrong has served on the committee of graders for the specialization exam given by the California State Bar in Workers Compensation Law. He has been nominated by his peers and recognized by Super Lawyer Magazine from 2006 to the present. Mr. Armstrong serves as a Judge Pro Tem at the Pomona Workers Compensation Appeals Board.

Jeffrey H. Sigel

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Graduated from Cornell University in 1981 with a Bachelor of Science degree in Industrial and Labor Relations. In 1984 he received a Juris Doctorate degree from the University of Pennsylvania School of Law, where he received the Mauer Prize for distinguished work. Mr. Sigel is admitted to practice law in California and in Washington, D.C. He began his legal career at the National Labor Relations Board in Washington, D.C. in 1984. Since moving to Los Angeles in 1986, he has been engaged in private practice of labor law, workers compensation, and insurance subrogation. Mr. Sigel was an associate for the offices of Johnson, Rifenbark & Wylie from 1996 through 1998.

Brigitte K. Lockner

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Received her Bachelor's Degrees in International Relations and European Languages from the University of Southern California in 1984, with Magna Cum Laude Honors. She received her Juris Doctorate Degree from Loyola University School of Law in Los Angeles in 1988 and was admitted to the California Bar in 1989. Ms. Lockner has practiced in the area of disability discrimination law for the Western Center for the Handicapped. Ms. Lockner was corporate counsel for a property management firm, involved primarily in landlord/tenant and contract law disputes. In 1991 Ms. Lockner became an associate with the firm of Johnson, Rifenbark & Wylie where she handled workers compensation liability and subrogation matters. In October of 1998, Ms. Lockner joined the firm of Armstrong & Sigel. Ms. Lockner has also served as a Judge Pro Tem at the Norwalk Workers Compensation Appeals Board. She is also a member of the Workers Compensation Defense Attorneys Association, the California Women Lawyers Association, and the L.A. County Bar Association/Workers Compensation Division. Ms. Lockner has been certified by the State Bar of California Board of Legal Specialization as a Certified Specialist in Workers Compensation Law.

Carolyn J. Beliso

Received her Bachelor of Science in Biology from Loyola Marymount University, Los Angeles in 1983. She was employed by Liberty Mutual Insurance Company for 7‑1/2 years as a supervisor and settlement specialist in the areas of workers compensation and liability. She graduated Magna Cum Laude from Southwestern University School of Law in 1993. While at Southwestern, Ms. Beliso was an editor of the Southwestern University Law Review and received several American Jurisprudence Awards. Ms. Beliso was the first recipient of the Wilshire Bar Association Honors Award. She clerked for Justice Sonenshire at the California State Court of Appeal where she drafted preliminary opinions. She joined Johnson, Rifenbark & Wylie in 1991 as a law clerk and then as a lawyer in 1994 handling workers compensation, civil litigation and subrogation. She was recently acknowledged as the  Attorney of the Year  by Roadway Express in appreciation of the services she has rendered for that account. Ms. Beliso joined Armstrong & Sigel in 1998. Ms. Beliso has been certified by the State Bar of California Board of Legal Specialization as a Certified Specialist in Workers Compensation Law.

Mykil Bachoian

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Graduated from the University of California at Los Angeles in 2007 with a Bachelor of Arts in History and Sociology. Mr. Bachoian received his Juris Doctorate degree from the Sandra Day O’Connor College of Law at Arizona State University in 2011, where he was a published Managing Editor of the Law Journal for Social Justice and President of the Jewish Law Students Association. Prior to joining Armstrong & Sigel, he volunteered for the Armenian Young Lawyers Association in Yerevan, Armenia before completing a Post-Graduate Fellowship at the Employment and Administrative Mandate Section of the California Department of Justice.  

Linda Babakhanian

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Graduated Magna Cum Laude from California State University, Northridge with a Bachelor of Arts degree in Political Science. Ms. Babakhanian received her Juris Doctorate degree from Southwestern Law School and was admitted to the State Bar of California in 2010. Ms. Babakhanian was the recipient of Judge Julian Beck Award for Outstanding Graduating Senior, while at California State University, Northridge. She was also the recipient of the CALI Award for Excellence for Internet and E-Commerce, while at Southwestern Law School. Her experience includes an externship with the Los Angeles City Attorney’s Office and clerkships at private law firms in various areas of civil litigation, including breach of contracts, collections, and personal injuries. Ms. Babakhanian is licensed to practice before all the courts of the State Bar of California as well as the United States District Court, Central District of California.

Tristan C. Orozco

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Graduated from Arizona State University with a B.A. in Political Science in 2005, and from the University of Chicago with a M.Div. in Religious Ethics in 2010.  Mr. Orozco received his J.D. from Loyola Law School, Los Angeles in 2016, where he was a published Note & Comment Editor for the Loyola International & Comparative Law Review, and Co-Chair of the Public Interest Law Foundation.  Mr. Orozco was the recipient of both the Sande Buhai Award and the Ami Silverman Endowment Award for his commitment to public interest, and provided over 1,300 hours of pro bono legal services during law school. His experience includes externships with the Inner City Law Center's Homeless Veterans Project, the U.S. Department of Labor, SAG-AFTRA, and Loyola's International Human Rights Clinic, as well as a clerkship with a boutique civil litigation firm.  Mr. Orozco is licensed to practice before all courts of the State Bar of California, as well as the United States District Court, Central District of California.

Catherine Sun

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Graduated from University of California, Irvine with a B.A. in Cognitive Sciences in 2010. While at UCI, Ms. Sun was a law clerk for the securities defense firm Rosen and Associates. Ms. Sun received her Juris Doctor from UC Hastings and was admitted to the State Bar of California in 2016. During her time at UC Hastings, Ms. Sun was Senior Articles Editor for UC Hastings' Business Law Journal and a teaching assistant for the moot court department.   Ms. Sun's experience includes an externship with the Honorable Stephen L. Johnson, a legal internship with the Department of Justice, and a clerkship at the Los Angeles District Attorney's Office. Prior to joining Armstrong & Sigel, Ms. Sun was an employment law defense attorney who specialized in retaliation and sexual harassment cases.