Office Manager Jobs in Riverside, NJ (NOW HIRING)

Firm Overview

Morgan Construction Management (MCM) provides exceptional consulting services to our clients in various markets that comprise of government, transportation, educational and religious institutions, housing and commercial. Since 2011, MCM serves its clients in Pennsylvania, New Jersey, New York, Delaware, Washington DC, and Maryland. MCM manages all phases of projects from programming to implementation and from pre-construction to post construction.

Position Summary

MCM is looking for a highly organized and proactive Office Manager with HR experience to oversee daily office operations and support key human resources functions. This role is ideal for someone who enjoys creating an efficient, professional, and positive workplace environment while assisting with employee-related processes such as onboarding, records management, recruitment coordination, and policy administration.

The Office Manager will serve as a central point of contact for employees, vendors, and management, ensuring smooth office operations and supporting the company’s HR and administrative needs. The position also manages payroll administration and invoice processing to ensure accurate payroll, timely vendor payments, and compliant HR practices. The ideal candidate is organized, service-oriented, and comfortable handling confidential information.

Key Responsibilities

Office Management

• • Manage daily office operations to maintain an efficient, professional, and well-organized workplace.
  • Serve as the primary point of contact for office vendors and service providers (facilities, utilities, internet, office supplies, equipment, maintenance).
  • Support internal communications and office-wide announcements.
  • Plan and support employee meetings, events, and onboarding logistics (workspace setup, supplies, orientation scheduling).
  • Maintain office policies, procedures, and documentation; recommend process improvements.

Human Resources

• • Administer job postings, interview scheduling, candidate communication, background checks, offer letter preparation support).
  • Administer onboarding and offboarding (new hire paperwork, I-9 verification, benefits enrollment support, system access requests, termination checklists, exit logistics).
  • Maintain HR records and HRIS data accuracy, including employee changes, job/compensation updates, and documentation filing.
  • Oversee benefits administration and vendor coordination (enrollment changes, invoice verification, employee questions, open enrollment support).
  • Provide first-line support for employee questions regarding policies, benefits, timekeeping, and payroll; escalate employee relations matters as needed.
  • Administer performance review cycles, training coordination, and HR compliance initiatives (handbook acknowledgments, required postings, record retention).

Payroll Administration

• • Process weekly payroll on a regular schedule, ensuring accurate time entry, approvals, and pay calculations.
  • Maintain payroll records including pay changes, new hires, terminations, deductions, garnishments, and direct deposit updates.
  • Administer timekeeping processes and audit timesheets for accuracy and policy compliance.
  • Resolve payroll discrepancies and respond to employee inquiries promptly and professionally.
  • Support payroll tax and year-end processes (W-2 distribution, reconciliations) in coordination with ADP.
  • Ensure payroll practices comply with federal, state, and local wage and hour regulations.

Invoice Processing & Vendor Management 

• • Review, code, route, and process invoices for timely payment, ensuring proper approvals and documentation.
  • Manage invoices related to HR, office operations, and other assigned categories (benefits, recruiting, office supplies, facilities, training, professional services).
  • Maintain vendor files and support vendor setup/updates (W-9 collection, contact and payment method changes).
  • Track recurring invoices and contract renewals; flag discrepancies and budget impacts.
  • Assist with month-end reconciliations and reporting by providing invoice status and expense summaries.

Required Qualifications

• 5+ years of experience in office management and/or HR generalist roles with payroll responsibility.
• Demonstrated experience processing payroll and administering timekeeping.
• Experience with invoice processing, coding, and routing for approvals.
• Working knowledge of HR compliance basics (I-9, wage and hour, confidentiality, record retention).
• Proficiency with HRIS, payroll/timekeeping platforms using ADP. 
• Strong skills in Microsoft Office (Excel, Word, Outlook) and comfort learning new systems.
• Excellent organization, attention to detail, and ability to prioritize multiple deadlines.
• High discretion and professionalism when handling confidential HR and payroll information.
• Excellent communication skills.

Preferred Qualifications

• Associate’s or Bachelor’s degree in HR, Business, Accounting, or related field.
• HR or payroll certifications (SHRM-CP/PHR, FPC/CPP) a plus.
• Experience with multi-state payroll and/or benefits administration.
• Familiarity with basic accounting concepts and general ledger coding.

Work Environment

This role is typically office-based and may require occasional flexibility to support company events, meetings, or urgent administrative needs.

Equal Opportunity Statement

MCM is an equal opportunity employer and value diversity in our workplace. All qualified applicants will receive consideration for employment without regard to race, color, religion, gender, national origin, disability, veteran status, or any other protected status.

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