Site General Manager in 90 Days: Culture Evidence Plan

ISO 45001 asks top management to show leadership and worker participation, but a new site general manager often inherits dashboards that prove activity rather than control. This article gives a 90-day culture evidence plan for a leader who needs to separate visible compliance from the daily decisions that actually shape safety culture.

1. What must a site general manager understand before touching culture?

A site general manager must understand that safety culture is not a mood score, a campaign, or a speech from the plant auditorium. It is the pattern of decisions that repeats when production, maintenance, quality, logistics, and EHS disagree about risk, especially during the first 90 days of a new leader's mandate.

As Andreza Araujo argues in Safety Culture: From Theory to Practice, culture becomes visible in habits, symbols, leadership decisions, and field routines. That matters because ISO specifies through ISO 45001 that leadership must integrate occupational health and safety into business processes, not leave it as a parallel EHS program.

The first trap is to treat a high audit score as evidence of maturity. A site can pass documentation checks while supervisors still normalize shortcuts, maintenance still accepts degraded barriers, and operators still believe that speaking up will slow the line. For that reason, the general manager's first decision is not which slogan to launch, but which evidence to trust.

Use the opening week to define 3 evidence streams: decision evidence, field evidence, and recovery evidence. Decision evidence shows what leaders approved or rejected; field evidence shows whether controls exist where the work happens; recovery evidence shows whether the site restores weak barriers before an injury makes the weakness visible.

2. First week: where should the leader look for evidence?

The first week should focus on places where culture leaves records before people polish the story. A general manager can learn more from 10 recent overrides, 5 delayed corrective actions, and 3 stopped jobs than from a polished culture slide deck, because each record shows how the site behaves under pressure.

Across 25+ years leading EHS in multinational environments, Andreza Araujo has identified that new leaders often receive a filtered version of safety performance. The filter is not always dishonest. It appears because each function reports the evidence that protects its own credibility, while the general manager needs a cross-functional view of risk.

Start with documents that already exist. Review the last month of serious potential events, high-risk permits, overdue corrective actions, safety walk findings, maintenance deferrals, and worker concerns. Compare them with field evidence from culture assessments, because survey sentiment alone cannot prove whether critical controls are working.

90 days is enough to build a culture evidence rhythm, but it is not enough to repair every cultural weakness. The point of the first week is triage: find the decisions that deserve immediate attention and the routines that deserve a deeper diagnostic.

3. First 30 days: how do you separate compliance from culture?

Compliance asks whether a requirement was met, while culture asks whether people still protect the requirement when nobody is watching. In the first 30 days, a site general manager should compare declared controls with operated controls in at least 4 high-risk routines: permits, isolation, contractor work, and corrective action closure.

The market often tells new leaders to begin with communication, because communication feels fast and visible. The stronger move is to begin with verification. If the site says pre-task risk assessment is mandatory, the leader should ask which jobs were stopped, changed, or delayed because the assessment found a risk that the schedule had ignored.

Use a simple review sample. Take 12 high-risk jobs from the last month, read the permit or job plan, then ask the supervisor what changed because of that document. If the answer is nothing in 10 of 12 cases, the document is mostly ceremonial. That is a culture signal, not a paperwork problem.

HSE explains that leaders influence health and safety through visible priorities and decisions, which means the general manager must make the link between field verification and business choices explicit. When a leader reviews only recordable injuries, the organization learns that clean numbers matter more than weak signals.

4. Month 2: what rhythm turns evidence into decisions?

Month 2 should convert scattered findings into a fixed decision rhythm. A practical rhythm has 4 recurring forums: a weekly critical-risk review, a monthly corrective-action aging review, a monthly worker-voice review, and a quarterly culture evidence review chaired by the general manager.

In more than 250 cultural transformation projects, Andreza Araujo observes that sites improve faster when culture evidence changes who must decide. A weak barrier owned by maintenance, operations, and engineering will not move if it stays inside an EHS spreadsheet. The general manager must assign decision rights to the function that controls resources.

Build the rhythm with meeting rules that make drift difficult. Each forum should name the risk owner, the control owner, the due date, the evidence of closure, and the decision that would trigger escalation. This is where a culture plan becomes operational rather than symbolic.

Connect the rhythm to existing work. A leader can link this article's approach to the leadership change safety reset already used in many transitions, but the site general manager needs a wider scope because production, capital planning, and labor allocation sit inside the role.

5. Month 3: how should the general manager handle resistance?

Resistance in Month 3 usually appears as delay, technical argument, or local exception. A site general manager should not treat every objection as defiance, because some objections reveal real constraints, but each objection must still end with a named decision, a documented risk position, and a date for review.

The minimized risk is polite avoidance. A leadership team may agree in the room, praise the culture plan, and then let the old operating logic continue through overtime, contractor pressure, missing parts, or weak supervision. Culture does not resist only through words; it resists through unchanged resource allocation.

Use 3 questions when resistance appears. Who benefits if this stays unresolved? Which control remains weak while we debate? What would make this acceptable evidence of closure 30 days from now? These questions keep the discussion away from personalities and toward decision quality.

ILO states that occupational safety and health depends on prevention systems, and prevention systems need management decisions that survive pressure. A general manager who accepts vague resistance teaches the organization that risk ownership is optional.

6. Month 4 onward: what should stay in the leader's agenda?

After the first 90 days, the site general manager should keep only the evidence that changes decisions. A mature routine does not add more metrics every month; it removes decorative measures and protects the few indicators that reveal control weakness before injury data reacts.

During the PepsiCo South America tenure, where the accident ratio fell 50% in 6 months, Andreza Araujo learned that speed came from disciplined leadership focus rather than motivational volume. The lesson for a site leader is direct: fewer rituals, stronger accountability, better evidence.

Keep 5 agenda items after the 90-day transition. Review serious-potential events, overdue high-risk actions, repeated weak signals, worker concerns closed without feedback, and controls that failed verification twice. These items are narrow enough for a general manager to follow and strong enough to expose cultural drift.

Each month without a culture evidence rhythm allows weak signals to age into accepted conditions, while leaders keep debating lagging indicators that only speak after harm has already occurred.

7. Common mistakes that weaken a 90-day culture plan

The most common mistake is launching a culture plan that creates more activities than decisions. A site can run 20 talks, publish 8 posters, and hold 4 leadership walks while the same overdue control actions remain open, which proves that activity has displaced accountability.

The second mistake is overtrusting averages. A site-level culture score can hide one business unit where supervisors suppress concerns, one shift where contractor controls are weak, or one maintenance process where bypasses have become routine. Averages are useful for orientation, not for control decisions.

The third mistake is delegating the culture plan to EHS alone. EHS can design the diagnostic, train reviewers, and organize evidence, but the general manager must own the decisions that change production priorities, staffing, engineering spend, and contractor expectations. Without that ownership, the plan becomes a technical report.

For a deeper adjacent case, compare this plan with the multi-site culture baseline from 250+ companies. The same principle applies at site and regional scale: culture work gains credibility when leaders can point to decisions that changed because of evidence.

8. Comparison: declared culture vs evidence-based culture

An evidence-based culture plan tests what leaders do with risk, while a declared culture plan describes what leaders want people to believe. The difference becomes visible within 30 days because evidence-based culture produces changed decisions, not only new language.

The table shows why the general manager role matters. EHS can collect evidence, but only the site leader can make the tradeoffs that change how the operation schedules work, funds controls, and responds when risk competes with output.

9. Resources to deepen the work

A new site general manager should deepen the work through 3 sources: Andreza Araujo's safety culture books, the site's own decision records, and institutional guidance on leadership duties. The strongest plan combines conceptual clarity with field evidence from the operation itself.

Start with Safety Culture: From Theory to Practice for maturity, leadership habits, and the link between culture and observable routines. Then review safety culture maturity assumptions to avoid treating maturity as a label rather than a decision pattern.

Use institutional guidance as a check on leadership accountability. ISO 45001 gives the management-system frame, HSE gives a practical leadership lens, and ILO gives the prevention-system anchor. None of those sources replaces site evidence, but each one prevents the plan from becoming personal preference.

Conclusion

A site general manager's first 90 days should prove which safety decisions change when culture evidence becomes visible. The leader who treats culture as evidence will find weak controls earlier, ask better questions, and stop rewarding dashboards that look clean while risk keeps moving underneath.

If your site needs to convert culture diagnosis into a working leadership rhythm, Andreza Araujo supports executive and site teams through safety culture assessment, leadership alignment, and transformation planning. Start the conversation at Andreza Araujo.