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On Call Part Time Jobs in Missouri (NOW HIRING)

WSP

On-Call Field Archaeologist

Jefferson City, MO

This Opportunity WSP is currently initiating a search for an On-call, Part-Time Field Archaeologist for our Louisville, Kentucky; Lexington, Kentucky; Kansas City, Missouri; Ballwin, Missouri; and ...

WSP

On-Call Field Archaeologist

Jefferson City, MO · On-site

This Opportunity WSP is currently initiating a search for an On-call, Part-Time Field Archaeologist for our Louisville, Kentucky; Lexington, Kentucky; Kansas City, Missouri; Ballwin, Missouri; and ...

Sodexo

Floor Technician

Saint Charles, MO · On-site

$18.90 - $19.85/hr

Employment Type: On-call part-time Pay Range: $18.90 - $19.85 Working with Sodexo is more than a job; it's a chance to be part of something greater because we believe our everyday actions have a big ...

Sodexo

Floor Technician

Saint Charles, MO

$18.90 - $19.85/hr

Employment Type: On-call part-time Pay Range: $18.90 - $19.85 Working with Sodexo is more than a job; it's a chance to be part of something greater because we believe our everyday actions have a big ...

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On Call Part Time information

What does an on call part time job mean?

An 'On Call Part Time' job means that you work only when your employer needs you, rather than having a set schedule of hours each week. You may be contacted with short notice to fill in for shifts or help during busy periods. This type of job offers flexibility but can also mean unpredictable hours and income, making it ideal for those who need a flexible work arrangement. The specific expectations and availability requirements can vary depending on the employer and industry.

What skills and qualifications are needed to thrive as an on call part time employee?

To thrive as an On-Call Part-Time employee, you generally need flexibility, time management skills, and the relevant qualifications or experience for the specific industry. Familiarity with scheduling software and communication tools is often required to manage shifting assignments efficiently. Strong reliability, adaptability, and proactive communication help you stand out in responding to last-minute work requests. These skills ensure you can meet employer needs promptly and effectively, supporting smooth business operations.

How does scheduling typically work for an on call part time position, and what flexibility can I expect?

On Call Part Time positions usually require you to be available during specified hours or on short notice, depending on the employer's needs. While you may not have a fixed weekly schedule, you’ll often be contacted as shifts become available, which can provide flexibility but also means your hours may vary. This role is ideal if you need adaptable scheduling, but it’s important to communicate your availability clearly with your supervisor. Being proactive and responsive can lead to more frequent shift offers and potential consideration for additional responsibilities or advancement.

What is the difference between On Call Part Time vs Part Time Nurse?

AspectOn Call Part TimePart Time Nurse
CredentialsLicensed Practical Nurse (LPN) or Registered Nurse (RN)Licensed Practical Nurse (LPN) or Registered Nurse (RN)
Work EnvironmentHospitals, clinics, home care, urgent careHospitals, clinics, nursing homes, outpatient facilities
Work ScheduleFlexible, as needed, often unpredictableScheduled hours, fewer shifts than full-time
Employer UsageHealthcare facilities requiring immediate staffingHealthcare facilities with regular staffing needs

On Call Part Time nurses are called in as needed, offering flexibility but less predictability. Part Time Nurses have scheduled shifts, providing more consistent hours. Both roles require similar credentials and work in healthcare settings, but differ mainly in scheduling and availability.

What are the most commonly searched types of Part Time jobs in Missouri?

The most popular types of Part Time jobs in Missouri are:

What cities in Missouri are hiring for On Call Part Time jobs?

Cities in Missouri with the most On Call Part Time job openings:

On Call Part Time jobs near you
Infographic showing various On Call Part Time job openings in Missouri as of August 2026, with employment types broken down into 1% Locum Tenens, 1% As Needed, 77% Full Time, 15% Part Time, and 6% Contract. Highlights an 94% Physical, 1% Hybrid, and 5% Remote job distribution.

Office Services Associate - On Call/Part Time

Saint Louis, MO

IST Management Services
Strategic Planning Consulting Services • 1 - 5K employees
Learn more about IST Management Servicesexternal

$18/hr

Part-time

Medical, Dental, Vision, Life, Retirement, PTO

Re-posted 10 days ago

IST Management rating

5.3

Company rating: 5.3 out of 10

Based on 15 frontline employees who took The Breakroom Quiz

Job description

Overview

Consider a new career today as an Office Services Associate - Part Time/On Call - Monday to Friday (First Shift)- with IST Management Services. The Office Services Associate will be responsible for providing high-volume mail scanning and production work in a team setting, within a professional office environment. 

Who We Are

In business since 1997 with over 1,800 employees, IST Management is a business process outsourcing company with operations in over 38 cities across the U.S. 

We've been recognized as one of the fastest-growing companies in the U.S. as a winner of the Nation's Best & Brightest Companies to Work For, as well as the HR Professional Excellence Award from the Society for Human Resource Management. We are proud to belong to the Military Spouse Employment Partnership through our nation's Department of Defense and have committed to Hiring Our Heroes' mission to hire 100,000 active and former service members. IST Management has also been included in the INC 5000 list!

You can check out istmanagement.com for more info on us!

Position Details:

This direct hire role is part-time/on call, and performs high-volume mail scanning and production work. Hours will range within M-F 6 AM - 7:00 PM.  The work location is in the Earth City, OH area.

Hourly Compensation: $18.00 USD per hour, depending on production experience

Benefits Include: Medical, Dental, Vision, STD, LTD, Life, 401k, Paid Time Off, Pet Insurance and Bonus Incentives!

Responsibilities

The Office Services Associate role is full time, second shift, Monday - Friday. Hours will range within 6:00 AM- 7:00 PM.

  • Maintain the highest levels of customer care while demonstrating a friendly and cooperative attitude
  • Operating high volume mail opening and scanning equipment, helping print and assemble large outbound mailings daily.
  • Demonstrate flexibility in satisfying customer demands in a high-volume, production environment
  • Consistently adhere to business procedure guidelines
  • Adhere to all safety procedures
  • Perform other tasks as assigned
  • The business environment does not allow cell phones in the production area.
Qualifications

Job Requirements:

  • Must have access to reliable transportation 
  • High school diploma or equivalent (GED) - College Degree is a plus and allows a fast track plan to management
  • Professional appearance and demeanor
  • Windows environment PC skills
  • Ability to effectively work individually or in a team environment
  • Lifting up to 55 pounds

IST Management provides reasonable accommodations to individuals with a disability in accordance with applicable law in both the application and employment stages. If you require any accommodation in completing your application for employment, please let us know by informing our Talent Acquisition team at tamteam@istmanagement.com.

Please respect individuals reaching out for accommodations by utilizing the contact information only for this purpose. You will receive correspondence directly from your local IST Management hiring team regarding your application submission and status after submission.

IST is an Equal Opportunity Employer (EOE). We are committed to providing equal employment opportunities to all qualified applicants, regardless of disability or veteran status.

Employment Type: PART_TIME

What IST Management employees say

Pay

Benefits

Hours and flexibility

Workplace

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