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Sr. HR Generalist

Martin Marietta

Phoenix, AZFull-timePosted 3w agoStill listed 3 days ago

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At a glance

Compensation
No compensation found
Location
Phoenix, AZ
Schedule
Full-time
Work Authorization
Not specified

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Requirements

Credentials this posting asks for.

Bachelor's degree, required

Job overview

The Senior Human Resources Generalist partners with a business unit’s leaders and employees to deliver HR services across the employee lifecycle. The role leads recruitment, employee relations, performance management, engagement, and compliance with labor and safety regulations. It also supports collective bargaining, workers’ compensation, HRIS records, workforce development, HR metrics, salary surveys, and benefits enrollment.

Skills & qualifications

RequiredNice to have

Skills

OSHA/MSHA Compliance, nice to haveHR Best Practices, nice to haveHR Policies and Procedures, nice to haveEmployment Law, nice to haveCommunication, nice to haveConfidentiality, nice to haveLeadership, nice to haveCompensation Design, nice to haveWorkers’ Compensation, nice to haveMicrosoft Office, nice to haveHRIS Systems, nice to haveAttention to Detail, nice to haveTime Management, nice to have

Qualifications

Bachelor’s in Human Resources, Business Administration, or Related Field, requiredPHR, SPHR, SHRM-CP, or SHRM-SCP Certification, nice to have5+ Years Progressive HR Experience, requiredHeavy Industrial or Construction Experience, nice to haveWork in All Weather Conditions, nice to haveWork in Noise Up to 85 Db, nice to have

Full job description

JOB SUMMARY The Senior Human Resources Generalist is a strategic partner and operational lead responsible for the delivery of HR services across a specific business unit. This individual serves as a trusted advisor to plant managers, operations leaders, and employees. The primary purpose of this role is to manage the full employee lifecycle—from talent acquisition and onboarding to performance management and employee relations—while ensuring strict compliance with MSHA/OSHA standards and federal/state labor laws. The successful candidate will be a champion of Martin Marietta’s culture, driving engagement and safety initiatives that support the company’s mission as a leading provider of natural resource-based building materials. KEY DUTIES AND RESPONSIBILITIES

  • Act as the primary point of contact for employee concerns, conducting thorough investigations into grievances and ensuring fair and consistent application of company policies.
  • Actively promote the "ONE Martin Marietta" culture, fostering an environment of mutual respect, inclusion, and diversity.
  • Provide expert guidance to management and staff on the interpretation and execution of personnel policies, procedures, and programs.
  • Lead the recruitment process for both technical (skilled trades, engineering) and non-technical roles, utilizing ATS and CRM tools to build a pipeline of diverse talent.
  • Partner with hiring managers to develop innovative sourcing strategies, including community outreach, job fairs, and partnerships with local educational institutions.
  • Implement engagement initiatives and recognition programs designed to improve morale and retention within plant and quarry environments.
  • Act as the subject matter expert on company policies and the employee handbook, providing clear and consistent guidance to all staff levels.
  • Administer the annual performance review process, ensuring timely completion and providing guidance to managers on delivering constructive feedback.
  • Identify high-potential employees and collaborate with leadership to develop career paths and training plans that align with future business needs.
  • Identify skill gaps and coordinate mandatory safety training, leadership development, and compliance-related webinars or workshops.
  • Ensure all HR activities comply with federal and state regulations, including EEOC, FMLA, ADA, and FLSA.
  • Support the administration of collective bargaining agreements, participating in grievance meetings and ensuring union-contract compliance.
  • Work closely with Safety Managers to manage Workers' Compensation claims and ensure that HR practices support MSHA/OSHA safety standards.
  • Maintain accurate employee records in the HRIS (Human Resources Information System), processing promotions, transfers, and terminations with a high degree of data integrity.
  • Generate and analyze HR metrics to provide actionable insights to regional leadership.
  • Assist in local salary surveys and provide support during the annual benefits open enrollment period.

QUALIFICATIONS Education Bachelor’s degree in Human Resources, Business Administration, or a related field. PHR, SPHR, SHRM-CP, or SHRM-SCP certification is a plus Work Experience 5+ years of progressive HR experience, preferably in Heavy Industrial or Construction. Knowledge, Skills, and Abilities OSHA/MSHA compliance and regulations HR best practices HR policies and procedures Employment law Effective communicator (written and spoken) Confidentiality Leadership Compensation design Workers’ compensation Microsoft Office programs HRIS systems Detail oriented Time management ADDITIONAL DETAILS Working Conditions Some duties require outside assignments and require periods of work in all weather conditions, cold, wet, dry and dusty. Must be able to work in areas where noise levels are up to 85 dbs.

How this job compares

Set against the 379 open Human Resources Generalist jobs on Olive Jobs, counted November 13, 2026.

Pay
  • This postingNot listed
  • US median$70–88K/yr130 salary ranges
  • US median$26–30/hr38 hourly ranges
Openings
Olive Jobs lists 379 open Human Resources Generalist jobs across the US. Under 1% of them nationwide are listed as remote or flexible.
Hiring the most across the US
Experience
This posting asks for at least 5 years of experience — more than three in four Human Resources Generalist postings that state a minimum ask for (median 3 years, across 289 postings).
Education
This posting asks for a bachelor's degree; 91 of the 379 open Human Resources Generalist jobs (24%) ask for a bachelor's degree or higher.

Counted across the open, public US postings on Olive Jobs on November 13, 2026. Figures based on too few postings are left out.

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