Skip to main content
Posted July 11, 2026
Robert Half

Administrative Assistant

Ontario, CA 91764, US Temporary
Compensation: $20 to $26 Hourly

Our company is seeking a detail-oriented and dependable Temporary Administrative Assistant to support daily office operations in our Ontario, California location. Based on general knowledge.

This role is ideal for a professional who is organized, adaptable, and comfortable handling a variety of administrative tasks in a fast-paced environment. Based on general knowledge.


Key Responsibilities:

  • Provide general administrative support to staff and management, including scheduling, filing, and document preparation. Based on general knowledge.
  • Answer and direct incoming phone calls and emails in a professional manner. Based on general knowledge.
  • Maintain office records, databases, and filing systems with accuracy. Based on general knowledge.
  • Assist with data entry, report generation, and correspondence. Based on general knowledge.
  • Coordinate meetings, prepare meeting materials, and manage calendars. Based on general knowledge.
  • Order office supplies and support overall office organization. Based on general knowledge.
  • Greet visitors and provide front-office support as needed. Based on general knowledge.



Qualifications:

Qualifications:

  • Previous administrative or office support experience preferred. Based on general knowledge.
  • Proficiency with Microsoft Office, including Word, Excel, and Outlook. Based on general knowledge.
  • Strong verbal and written communication skills. Based on general knowledge.
  • Excellent organizational skills and attention to detail. Based on general knowledge.
  • Ability to manage multiple priorities and meet deadlines. Based on general knowledge.
  • High school diploma or equivalent required. Based on general knowledge.

Preferred Skills:

Key technical competencies valued in administrative and customer support roles include administrative operations, front office management, Google Suite, Microsoft Excel, project management, and workflows.

Soft skills that leaders identified as especially important include adaptability and continuous learning, critical thinking and problem solving, creativity and innovation, communication, and emotional intelligence. 


Compensation

$20.00-$26.00 Hourly

About Us

TalentMatch®

Robert Half is the world’s first and largest specialized talent solutions firm that connects highly qualified job seekers to opportunities at great companies. We offer contract, temporary and permanent placement solutions for finance and accounting, technology, marketing and creative, legal, and administrative and customer support roles.

Robert Half works to put you in the best position to succeed. We provide access to top jobs, competitive compensation and benefits, and free online training. Stay on top of every opportunity - whenever you choose - even on the go. Download the Robert Half app and get 1-tap apply, notifications of AI-matched jobs, and much more.

All applicants applying for U.S. job openings must be legally authorized to work in the United States. Benefits are available to contract/temporary professionals, including medical, vision, dental, and life and disability insurance. Hired contract/temporary professionals are also eligible to enroll in our company 401(k) plan. Visit roberthalf.gobenefits.net for more information.

© 2025 Robert Half. An Equal Opportunity Employer. M/F/Disability/Veterans. By clicking “Apply Now,” you’re agreeing to Robert Half’s Terms of Use and Privacy Notice.

Sign up for Job Alerts