Job Details

Flagger - Portable (Seasonal)

Job Category: Labor

Requisition Number: FLAGG003783

Posted: July 6, 2026

Full-Time

On-site

Location: Sioux City, IA 51105, USA

Job Details

Description

Good Pay! Good Benefits! Good People! Knife River is a PEOPLE-first company. Our team members are key to our success, and we are committed to giving them the tools, training, and time to do their jobs productively and go home safely each day. Please consider joining our growing team today!

At Knife River, we take care of our team because we know it's our people who make us successful. We are one of the 10 largest construction materials producers/contractors in the Country. Our goal is to build strong teams that, in turn, build strong communities. We are also a publicly traded company on the NYSE with the ticker symbol KNF and part of the S&P MidCap 400 index.

Role Overview:

This is a seasonal position, you can use your winters off to travel, hunt, fish or for other activities you enjoy while your benefits continue year-round.

This position is responsible to safely control the movement of vehicular traffic through construction projects.

The typical schedule is Monday - Friday 6:00 AM - 6:00 PM with an occasional Saturday. Hours may vary based on weather and customer demand.

Duties and/or Responsibilities: (summary of components that make up the job) An asterisk (*) indicates essential job functions that cannot be modified in order to fulfill the job requirements.

1. Safely control movement of motoring public through construction site.
2. Discusses traffic routing plans and type of location of control points with supervisor.
3. Directs movement of traffic through site, using sign, hand and flag signals.
4. Warns construction workers when approaching vehicle fails to heed signals to prevent accident and injury to workers.
5. Informs drivers of detour routes through construction sites.
6. Records license number of traffic control violation for police.
7. May give hand marker to last driver in line up of one-way traffic for flagger at opposite end of site, signaling clearance for reverse flow of traffic.
8. Communicate effectively (verbal, listening, written) and work with difficult people under high stress situations. Self-motivated, team-player with good interpersonal skills; ability to maintain positive customer relations and act courteous/respectful of others. Monitor and discuss traffic flow problems with work crew and supervisor.
9. Performs other duties as assigned.

Minimum Requirements: (minimum educational, experience, or other relevant job requirements)

1. General education, grammar and arithmetic, GED or high school diploma or equivalent.
2. Maintain valid driver's license with acceptable driving record when pilot car operation required.

Benefits:

1. Medical, Dental, & Vision Insurance
2. Health Savings and Flexible Spending Accounts
3. 401(k) with Company Match
4. Profit Sharing
5. Paid Time Off
6. Paid Holidays
7. Company Paid Life and AD&D Insurance
8. Short-term Disability
9. Employee Assistance Program
10. Years of Service Recognition
11. Voluntary Life Insurance for Employees, Spouses, and Dependents
12. Critical Illness Plan
13. Accident Coverage Plan
14. Hospital Indemnity

Additional Information: Knife River is an Equal Opportunity/Affirmative Action employer. All qualified applicants will receive consideration for employment without regard to race, age, color, religion, gender, gender identity, sexual orientation, national origin, disability, protected Veteran status or any other protected category under applicable state/federal law.

Subject to pre-employment drug testing and background checks.

All applications are submitted online. If you are having issues completing the application, please come to the office for assistance.