Human Resources Intern Summer 2026

Sully-Miller Holding Co.
United States, California, Brea
135 South State College Boulevard (Show on map)
Oct 03, 2025
Sully-Miller Contracting Co., the Colas USA subsidiary that operates throughout Southern California, is a company with over 100 years in the construction industry. Since 1923, Sully-Miller has become one of the premier construction contractors in Southern California, building much of the region's infrastructure including airports, seaports, rail and intermodal, military/federal, roads, highways, and specialty projects. To learn more about Sully-Miller Contracting Co. visit www.sully-miller.com. The Colas USA Family of Companies provides competitive pay, outstanding benefits, career advancement opportunities, professional education, and extensive training for every employee. We pride ourselves on upholding the highest standards of safety, environmental conservation, and ethical conduct as we strive to grow our infrastructure products and services through empowering and developing our people, fostering innovation, utilizing new technology, and maximizing vertical integration at all levels of the company's value chain. To learn more about the Colas USA Family of Companies, please visitwww.colasusa.com. Compensation $26 per hour Job Summary The Human Resources Intern will support the HR department by assisting with daily administrative tasks, recruitment processes, employee onboarding, and maintaining employee records. This internship provides a hands-on experience in various HR functions, including talent acquisition, employee engagement, and compliance initiatives. The ideal candidate is organized, communicative, and eager to learn about human resource management practices while contributing to a positive workplace environment. Main Responsibilities Assist with the onboarding process for new employees Manage and oversee the monthly insurance billing process Support the planning and coordination of company events Provide administrative and clerical support to the department Scan, index, and organize documents and files into OnBase Contribute to special projects as assigned Perform other duties as assigned Education and/or Work Experience Requirements Must be actively working towards a college degree Skills Ability to multitask efficiently and be flexible Ability to work independently and as a team Basic math skills with the ability to calculate and analyze data Excellent attention to detail Excellent organizational skills Excellent verbal and written communication Must have the ability to work well with all levels of the organization Proficient in Microsoft Word, Excel, and PowerPoint Strong tendency to take initiative Physical Requirements Ability to utilize hands and fingers in order to type and carry reports should the need require Ability to stand, walk, and reach with arms and hands throughout the workday should the need arise Ability to climb, balance, stoop, kneel, and crouch should the need arise Ability to sit for a long period of time, possibly more than 90% of the workday Ability to see clearly or with assistance via necessary correction Colas Inc. and its subsidiaries are an Equal Opportunity Employer. For details on the specifics of this commitment, please click here to view theEEO document.If you are an individual with a disability and require a reasonable accommodation to: to meet the requirements of the role in which you are applying complete any part of the application process access or use the online application process and need an alternative method for applying Please contact Colas Inc. at 973-290-9082 or send an email toColasRecruiter@colasinc.com.