Human Resources Administrative Assistant

Job Details Posting Details

• Posted on September 25, 2026

• Location:
  
  Odessa, TX, USA (CW - Odessa)
• On-site
• Human Resources
• Full-Time
• Requisition #: CACTU
  002680
• Supervisor:
  Katrina Montoya

Onsite - 5 days

Job Summary: Responsible for providing day-to-day Human Resources administrative and operational support to assigned branch locations. This position supports the employee lifecycle, including pre-employment activities, onboarding, HRIS transactions, benefits support, associate inquiries, and separation processing, while partnering with the HR Business Partner, Recruiting, HR Shared Services, IT, and branch leadership to provide a consistent associate experience.

Essential Functions, Roles, and Responsibilities:

• Complies with all quality, safety, health, and environmental requirements, policies, and procedures relevant to the position.
• Provides administrative support for new hires, employee changes, and terminations, including HRIS data entry and documentation, as needed in support of the HR Business Partner.
• Partners with Recruiting and HR Shared Services to coordinate pre-employment activities and ensure a smooth transition from candidate acceptance through onboarding.
• Coordinates and leads first-day onboarding for new associates, including completion of required new-hire documentation and Cactus U orientation.
• Assists new associates with initial access to HR and company systems, including UKG, Cactus U, Gensuite, SharePoint, and other applicable Cactus applications.
• Serves as a first point of contact for routine associate questions and directs associates to the appropriate HR, Benefits, Payroll, Recruiting, or Shared Services resource when needed.
• Provides general benefits support, including assistance with enrollment and qualifying life event questions, and partners with the Benefits team on more complex matters.
• Supports annual Open Enrollment activities in coordination with the Shared Services Benefits team.
• Creates and distributes SSE training logbooks, T-shirts, and other materials supporting the SSE program.
• Coordinates branch HR communications, associate events, and other employee engagement activities as needed.
• Assists associates with basic password and access issues and partners with IT to submit and coordinate IT support requests when necessary.
• Participates in required Safety rotation meetings for both day and night shifts.
• Maintains the confidentiality and security of employee records, HR data, and sensitive business information.
• Supports HR audits, reporting, document collection, and record maintenance as requested by the HR Business Partner.
• Performs special projects and other HR-related duties as assigned.

TRAVEL REQUIREMENTS: Regular weekly travel to the Hobbs, New Mexico location is required to provide on-site HR administrative support. Additional travel to other company locations may be required based on business needs.

Education, Training,

Experience:

• High school diploma or equivalent required; associate degree or certificate in Human Resources, Business Administration, Office Administration, or a related field preferred.
• Three (3) or more years of administrative experience, preferably in a Human Resources environment.
• Experience with an HRIS or employee management system preferred.

CERTIFICATIONS, LICENSES, REGISTRATIONS:

• Human Resources certification preferred.
• Valid driver's license and acceptable Motor Vehicle Record (MVR) required due to regular travel between company locations.

Job Knowledge, Skills, Abilities:

• Working knowledge of Human Resources practices and the employee lifecycle.
• Strong organizational skills with the ability to manage multiple priorities and meet deadlines.
• Strong attention to detail and…