Win the Fight Before Flu Season Begins: How to Protect Your Workforce

The shift kicked off like clockwork with belts humming, pallets gliding, scanners chirping in perfect sync — a well-oiled machine powered by people. Then, everyone noticed a team member with a persistent cough who appeared lethargic. The team member thought they could push through but decided to clock out early. The next day, the same employee notified management that they would be absent due to illness. Later that day, the sick employee shared the diagnosis with management: influenza (flu). 

Later that week, another team member went home with similar signs and symptoms. The following week, it was someone else. Key cogs in the machine were missing, and it showed. Orders were lagging, fatigue and frustration were setting in, and morale was dropping as demand rose. Keeping business moving became a daily challenge.

Whether on a warehouse floor or in an office suite, a flu outbreak is bad for business. By the time signs and symptoms surface, it’s too late. Workforce availability has declined, making it hard to maintain productivity. Preventing a flu outbreak doesn’t begin when illness has been confirmed. It begins before the outbreak ever takes hold — long before the first cough.

The business case for workplace flu vaccinations

The flu virus spreads unseen at work — in a conference room, an elevator, or a break room. When a respiratory virus such as flu spreads across a workforce, the impact shows up quickly:

• Increased absenteeism
• Reduced productivity
• Overtime and backfill costs
• Added strain on teams

One physician-diagnosed case of flu can sideline an employee for 3.7 to 5.9 workdays.1 Multiply that across a workforce, and the loss can compound quickly. A mild case could mean a few missed shifts, but a severe case could mean an employee is out for an entire workweek or longer with complications.¹

Even a moderate flu outbreak can create significant operational challenges. For large organizations, a small uptick in employee absences can ripple across departments. For small businesses that rely on lean teams to handle multiple business-critical tasks, losing even a single employee to illness could be a major setback.

The takeaway is simple: companies of all sizes and industries benefit from offering flu vaccinations. It’s more than a wellness perk; it’s a practical way to sustain workforce availability and avoid costly operational disruptions.

Workforce flu vaccination options

Concentra® offers workforce flu vaccination services designed to meet unique employer needs. With options ranging from flu vaccinations at Concentra medical centers to employee vaccination events conducted at company worksites, Concentra helps organizations simplify logistics to increase participation and reduce the risk of illness-related disruptions.

Center-based vaccinations

A center-based program makes it easy for employees to fit a flu shot into their schedule by allowing them to visit any Concentra clinic without an appointment. It’s an ideal solution for distributed or shift-based workforces. For added convenience and efficiency, employers can authorize flu vaccinations to be administered during other occupational health visits (e.g., drug tests, physicals, etc.).

Worksite flu vaccination events 

Concentra’s Episodic Services bring occupational health directly to the workplace, eliminating the need for employees to schedule time off or seek care after work. Concentra’s clinical team handles the logistics, ensuring each episodic event is compliant and seamless for both employers and employees.

Some operational benefits can include:

• Frictionless Participation: Bringing care directly to the workplace removes barriers to employee travel, which can improve participation and boost company vaccination rates.
• Protected Operational Capacity: Proactive immunization hardens the workforce against the virus, helping prevent sudden staffing gaps, costly overtime, and delivery delays.
• Service Bundling Efficiency: Large-scale clients can schedule episodic events for other essential workforce health initiatives (e.g., employee physicals, biometric screenings, vision testing, etc.).

Planning a worksite flu vaccination

Successful flu vaccination events start with careful planning. Concentra’s Episodic Services help streamline the process, making it easier for employers to offer occupational health services at their worksites. Employers should consider the following when partnering with Concentra for worksite flu vaccination events:

1. Early planning (June - August)
   • Lock in dates before peak season.
   • Secure vaccine supply.
   • Align with your shift schedules.
2. Quick, turnkey setup
   • Medical team comes to worksite.
   • All supplies and staff are included.
   • Minimal space is required.
3. Fast, shift-friendly delivery
   • Employees (patients) rotate through in minutes.
   • Little to no production downtime is required.
   • Service scales for employers with 100+ participants.

Organizations that delay planning often face limited provider availability, compressed timelines, and potentially lower employee engagement, which can reduce the overall impact of their vaccination efforts.

Increasing employee participation

Driving strong employee participation starts with intentional, early engagement. To boost involvement:

• Communicate early and often. Begin outreach before flu season ramps up, and reinforce messages across multiple channels. Consistent reminders help keep vaccination top of mind and signal that it’s a priority.
• Highlight the benefits. Emphasize not just individual protection, but the broader impact: protecting their families, avoiding missed work, and keeping teams productive.
• Reduce barriers. Make participation as easy as possible by offering onsite clinics or allowing time for off-site visits. Convenience is one of the strongest drivers of engagement.
• Encourage leadership buy-in. When managers and leaders actively promote and participate, employees are more likely to follow suit.

When vaccination is simple, accessible, and visibly supported, participation tends to rise.

Don’t miss the late-season opportunity

According to the Centers for Disease Control and Prevention (CDC), flu season typically peaks between December and March; however, it can extend well into spring.² The ideal time to get vaccinated is from September to October, but missing that window shouldn’t discourage someone from getting vaccinated.² Even when the threat feels low, the risk remains. Encouraging vaccination beyond the peak window can demonstrate a stronger commitment to employee health and help combat the misconception that a flu vaccination is only necessary in the fall.³

Preparation is the silent victory

A flu outbreak isn’t sudden; it builds slowly — long before the first symptom appears. Companies that proactively address the issue can protect workforce availability and ensure business continuity during flu season. Concentra makes it easy with nationwide clinics and episodic events. Click here to find a nearby Concentra medical center or schedule a worksite flu vaccination event today.

Notes:

1. Blanchet Zumofen, MH, Frimpter, J, and Hansen, SA. Impact of Influenza and Influenza-like Illness on Work Productivity Outcomes: A Systematic Literature Review. PharmacoEconomics 41, 253–273 (2023).
2. Grohskopf, L. A., et al. Prevention and Control of Seasonal Influenza with Vaccines: Recommendations of the Advisory Committee on Immunization Practices — United States, 2025–26 Influenza Season. Morbidity and Mortality Weekly Report. Centers for Disease Control and Prevention.
3. Misconceptions about Seasonal Flu and Flu Vaccines. Centers for Disease Control and Prevention.