Atty. Marcus Steven Loo
Marcus Steven Loo is a lawyer practicing workers compensation, asbestos/toxic tort, employment & labor and 3 other areas of law. Marcus received a B.S. degree from University of California, Irvine in 1994, and has been licensed for 24 years.
Asbestos & Toxic Tort & More Attorney · Serving Ontario, CA · 24+ Years Experience
Profile Summary
About Marcus Steven Loo at a Glance
Marcus Steven Loo is an Associate based in Ontario, California, practicing at Rose, Klein & Marias LLP. They have 24+ years of legal experience, licensed to practice since 2002. Their practice focuses on personal injury, employment, workers comp, and litigation. Admitted to practice in California (2002) and Nevada (Inactive) U.S. District Court, Central District of California (2004). Educated at University of the Pacific, McGeorge School of Law (J.D., 1999) and University of California, Irvine (B.S. Biological, 1994). Active member of State Bar of California. Serves clients in Ontario, CA and the surrounding metropolitan area.
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About Marcus Steven Loo
- Marcus Steven Loo is a lawyer practicing workers compensation, asbestos/toxic tort, employment & labor and 3 other areas of law
- Marcus received a B.S. degree from University of California, Irvine in 1994, and has been licensed for 24 years
- Marcus practices at Rose, Klein & Marias LLP in Ontario, CA
Practice Areas Explained
Marcus Steven Loo's Areas of Legal Practice
Each practice area below reflects the types of cases Marcus Steven Loo handles, with a practical overview of what that area of law involves and how it may apply to your situation in Ontario.
Personal Injury in Ontario
Personal injury attorneys help accident victims recover compensation for medical bills, lost wages, and pain & suffering. Most work on contingency — no fee unless you win.
Marcus Steven Loo is one of 262,557 personal injury attorneys indexed nationally. Browse personal injury attorneys in California →
Employment Law in Ontario
Employment lawyers represent workers in wrongful termination, discrimination, harassment, wage & hour disputes, and severance negotiations.
Marcus Steven Loo is one of 167,770 employment attorneys indexed nationally. Browse employment attorneys in California →
Workers Compensation in Ontario
Workers compensation lawyers help injured workers get medical care, lost wages, and disability benefits. Free consult, no fee unless you win.
Marcus Steven Loo is one of 54,932 workers comp attorneys indexed nationally. Browse workers comp attorneys in California →
Civil Litigation in Ontario
Civil litigation attorneys for breach of contract, business disputes, civil rights, and class action lawsuits.
Marcus Steven Loo is one of 450,751 litigation attorneys indexed nationally. Browse litigation attorneys in California →
Jurisdictional Context
Why Local Counsel Matters in Ontario
Practicing law in California. Legal matters in California are governed by state-specific rules of civil and criminal procedure, statutes of limitations, and substantive law. Cases originating in Ontario are typically filed in the local municipal court or the appropriate California state district court, depending on subject matter and amount in controversy. An attorney licensed in California brings working knowledge of local procedural deadlines, judicial practices in this venue, and the substantive law that applies to cases brought here. Out-of-state attorneys generally cannot represent clients in California courts without local counsel or pro hac vice admission.
Ontario Courts and Legal Process
Choosing a Ontario-based attorney means your counsel already knows the local docketing timelines, preferred filing formats, and how individual judges typically rule on procedural motions — details that only come from practicing in this jurisdiction day after day. That local familiarity can translate to better strategy, faster filings, and fewer costly surprises.
Looking for additional California attorneys? Browse all attorneys in Ontario or all attorneys in California.
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Professional Profile
Why Clients in Ontario Choose Marcus Steven Loo
Selecting an attorney is one of the most consequential decisions you can make when a legal matter arises. Below are the core qualities that distinguish Marcus Steven Loo's practice in the field of personal injury, employment, workers comp, and litigation.
Decade-Tested Legal Experience
Marcus Steven Loo brings 24+ years of hands-on legal practice — enough to have navigated the recurring fact patterns, procedural traps, and negotiation dynamics that shape case outcomes.
Multi-State Bar Admission
Licensed in California and Nevada (Inactive) U.S. District Court, Central District of California, Marcus Steven Loo can represent clients in cases that span state lines or require counsel in multiple jurisdictions.
Broad Practice Area Coverage
Covering personal injury, employment, and workers comp, Marcus Steven Loo can address the full spectrum of a client's legal needs without requiring referrals to separate specialists for each issue.
Local Presence in Ontario
A Ontario-based practice means Marcus Steven Loo attends hearings in the same courthouses, knows the local clerks, and understands the unwritten scheduling norms that affect every case filed here.
Case Types
Common Legal Issues Marcus Steven Loo Handles in Ontario
Below is a representative sample of the types of matters Marcus Steven Loo has experience with under California law. If your situation involves one of these case categories, this attorney may be well positioned to help you understand your options.
This list is illustrative, not exhaustive. Contact Marcus Steven Loo directly to discuss the specifics of your situation.
Search Reference
How People Find Marcus Steven Loo Online
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Marcus Steven Loo's Practice Areas & Specializations
Education & Law School Background
Bar Admissions & Licensed Jurisdictions
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