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Per Diem Lab Assistant Jobs in Riverside, CA (NOW HIRING)

City of Hope

CT Technologist - Per Diem

Irvine, CA

$66.62/hr

... patient concerns * Assist the radiologist, surgeon, and/or clinician during CT procedures ... CPR * Hourly Per Diem Rate: $66.61515 / hr City of Hope employees pay is based on the following ...

City of Hope

CT Technologist - Per Diem

Irvine, CA · On-site

$66.62/hr

... patient concerns * Assist the radiologist, surgeon, and/or clinician during CT procedures ... CPR * Hourly Per Diem Rate: $66.61515 / hr City of Hope employees pay is based on the following ...

UHS

PHLEBOTOMIST- Per Diem

Corona, CA · On-site

$21.90 - $32.84/hr

Responsibilities PHLEBOTOMIST Per Diem The tradition of caring that culminated in the establishment ... Reporting to the Director of Laboratory this position obtains blood samples for lab testing ...

UHS

Clinical Lab Scientist - Per Diem

Wildomar, CA · On-site

$44.74 - $64.88/hr

The hospital performs more than 4,000 surgeries a year, and has an average of 4,000 Emergency Department visits per month. The hospital features a Bariatric Weight-Loss Surgery Center of Excellence ...

UHS

Clinical Lab Scientist - Per Diem

Wildomar, CA · On-site

The hospital performs more than 4,000 surgeries a year, and has an average of 4,000 Emergency Department visits per month. The hospital features a Bariatric Weight-Loss Surgery Center of Excellence ...

Astrana Health

RN Circulating - Per Diem

Tustin, CA · On-site

$60/hr

Assess patients preoperatively and review medical history, allergies, lab results, and surgical ... Perform accurate charting and electronic medical record documentation * Assist with room turnover ...

UHS

Clinical Lab Scientist - Per Diem

Wildomar, CA · On-site

$44.74 - $64.88/hr

The hospital performs more than 4,000 surgeries a year, and has an average of 4,000 Emergency Department visits per month. The hospital features a Bariatric Weight-Loss Surgery Center of Excellence ...

UHS

Clinical Lab Scientist - Per Diem

Wildomar, CA

The hospital performs more than 4,000 surgeries a year, and has an average of 4,000 Emergency Department visits per month. The hospital features a Bariatric Weight-Loss Surgery Center of Excellence ...

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All JobsPer Diem Lab Assistant JobsPer Diem Lab Assistant Jobs in Riverside, CA

Per Diem Lab Assistant information

See Riverside, CA salary details

$10

$21

$31

How much do per diem lab assistant jobs pay per hour?

As of Jul 1, 2026, the average hourly pay for per diem lab assistant in Riverside, CA is $21.12, according to ZipRecruiter salary data. Most workers in this role earn between $17.31 and $24.09 per hour, depending on experience, location, and employer.

What is the difference between Per Diem Lab Assistant vs Full-Time Lab Technician?

AspectPer Diem Lab AssistantFull-Time Lab Technician
CredentialsHigh school diploma or equivalent; some roles may require certificationAssociate's or Bachelor's degree in a related field; certification may be preferred
Work EnvironmentTemporary, flexible shifts in laboratories, hospitals, or clinicsFull-time, permanent positions with regular hours in similar settings
Employer & Industry UsageHospitals, research labs, clinics; used for short-term staffing needsHospitals, diagnostic labs, research institutions; core staff roles

Per Diem Lab Assistants typically work on a temporary, flexible basis with minimal credentials, focusing on support tasks. Full-Time Lab Technicians hold permanent roles with more advanced qualifications, performing routine testing and analysis regularly. The main difference lies in employment status, credentials, and job stability.

What are the key skills and qualifications needed to thrive as a Per Diem Lab Assistant, and why are they important?

To thrive as a Per Diem Lab Assistant, you need a basic understanding of laboratory procedures, specimen handling, and often a high school diploma or equivalent. Familiarity with laboratory information systems (LIS), phlebotomy equipment, and proper safety protocols is commonly required. Attention to detail, strong organizational skills, and effective communication help you excel in this fast-paced, flexible role. These skills and qualities are crucial to ensure accurate results, maintain lab efficiency, and support patient care in variable work schedules.

What are Per Diem Lab Assistants?

Per Diem Lab Assistants are laboratory support staff who work on an as-needed basis rather than a regular, full-time schedule. Their primary responsibilities include preparing samples, maintaining lab equipment, and assisting with testing procedures. Because their hours can vary depending on the laboratory's needs, this role offers flexibility and is often used to cover staff shortages, busy periods, or special projects. Per Diem Lab Assistants are commonly found in hospitals, research institutions, and diagnostic laboratories.

What are the most common challenges faced by Per Diem Lab Assistants, and how can they be effectively managed?

Per Diem Lab Assistants often encounter challenges such as adapting quickly to different lab environments, managing fluctuating work schedules, and staying updated on diverse testing procedures. Since the role typically involves filling in for full-time staff or covering peak workloads, strong adaptability and time management skills are essential. Building good communication with permanent staff and being proactive in asking questions can help ease transitions and ensure quality work. Additionally, familiarizing yourself with the specific protocols of each lab assignment can make your shifts smoother and more efficient.
What are popular job titles related to Per Diem Lab Assistant jobs in Riverside, CA? For Per Diem Lab Assistant jobs in Riverside, CA, the most frequently searched job titles are:
What job categories do people searching Per Diem Lab Assistant jobs in Riverside, CA look for? The top searched job categories for Per Diem Lab Assistant jobs in Riverside, CA are:
What cities near Riverside, CA are hiring for Per Diem Lab Assistant jobs? Cities near Riverside, CA with the most Per Diem Lab Assistant job openings:
Per Diem Lab Assistant jobs near you
Infographic showing various Per Diem Lab Assistant job openings in Riverside, CA as of June 2026, with employment types broken down into 6% As Needed, 63% Full Time, 15% Part Time, 3% Temporary, 10% Contract, and 3% Nights. Highlights an 94% Physical, 1% Hybrid, and 5% Remote job distribution, with an average salary of $43,935 per year, or $21.1 per hour.
Certified Occupational Therapy Assistant ( Per diem ) (3233)

Certified Occupational Therapy Assistant ( Per diem ) (3233)

INTERFACE REHAB INC

Murrieta, CA • On-site

$38 - $42/hr

Other

Medical, Dental, Vision, Life, Retirement, PTO

Posted 20 days ago

Job description

Certified Occupational Therapy Assistant (COTA) 

Interface Rehab, Inc., a trusted leader in rehabilitation services since 1995, is seeking passionate Certified Occupational Therapy Assistants (COTA) to join our team. Whether you're looking for flexible per-diem shifts or a full-time schedule, we offer a variety of opportunities tailored to your availability.

Opportunities

  • Full-time and Part-time and Flexible scheduling: Shifts available, up to 40 hours/week
  • Opportunities across post-acute care, retirement communities, and outpatient clinics

What You'll Do

  • Provide exceptional occupational therapy care to patients across various settings
  • Assist in evaluating and implementing personalized treatment plans
  • Collaborate with physicians, families, and interdisciplinary teams to optimize recovery
  • Document patient progress and maintain accurate medical records
  • Support patients in achieving rehabilitation goals and long-term wellness

What You’ll Need

  • Active or obtainable Certified Occupational Therapy Assistant license in the state of California

 

Compensation & Benefits

  • We offer a competitive hourly rate ($38.00 to $42.00) and one of the best benefits packages in the industry. Some of our excellent benefits for full-time employees include:
  • Paid Time Off (PTO) – 15 Days to start.   Accrue up to 30 days of PTO!  Every year an additional day of PTO is added up to a maximum accrual of 30 days of PTO.
  • 6 Paid holidays and up to 3 days of bereavement pay each year.
  • A 401(K)-retirement program with a company match of 25% up to the first 4% of your deferral every payroll.
  • Medical, Dental, Vision, Company Paid Basic Life Insurance of $25,000 and additional Optional Life Insurance, and Pet Insurance available.
  • Relocation Assistance.
  • H1-B Immigration expertise.
  • Sign on Bonus for select opportunities!

Why Interface Rehab?

Join a team of dedicated professionals committed to delivering high-quality therapy services throughout California. We offer a comprehensive continuum of care and a supportive environment where your skills and compassion make a lasting impact.

 

Ready to take the next step in your COTA career? Join our team of dedicated, skilled professionals who are committed to supporting every stage of recovery. Please visit our career page to view all our opportunities.  We look forward to discussing your personal and professional goals and interests.  We have Full-time, Part-time, Per Diem and select Travel opportunities throughout California 

 

Talent Acquisition department

recruiting@interfacerehab.com

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