Malaysian Oil Palm Workers Are in Pain: Hazards Identification and Ergonomics Related Problems

Last reviewed: March 2026

Background and Context

Malaysia is the world’s second-largest producer of palm oil, with the oil palm industry occupying approximately 5.9 million hectares of plantation land and employing hundreds of thousands of workers. The industry is a cornerstone of the Malaysian economy, contributing significantly to export revenue and rural employment. However, despite its economic importance, the occupational health and safety of oil palm plantation workers has historically received insufficient attention from researchers and policymakers.

Oil palm plantation work is inherently labour-intensive, particularly during the harvesting phase. Workers use manual tools — including chisels for younger palms and sickles mounted on long poles for taller trees — to cut fresh fruit bunches (FFBs) that can weigh between 5 and 50 kilograms. These bunches must be cut, collected, and loaded onto transport vehicles, often in extreme heat and humidity. The physical demands of these tasks create substantial ergonomic risks, including exposure to awkward postures, heavy lifting, highly repetitive motions, and sustained muscular effort.

The current worker-to-plantation-area ratio is approximately one person per 10 hectares of oil palm, and despite the introduction of some mechanisation, many harvesting and collection tasks remain manual. This is partly due to the challenging terrain of many plantations and partly because workers have been reluctant to adopt new technologies when these are designed without ergonomic considerations.

Study Design and Methodology

The study combined observational ergonomic assessment with self-reported musculoskeletal symptom surveys. Workers’ activities and postures during various work tasks were extensively documented using camera and video recordings, enabling detailed ergonomic analysis. The Modified Nordic Questionnaire (MNQ) was distributed to workers across different plantation work units — including FFB cutters, loose fruit collectors, FFB loaders, and other support workers — to capture the prevalence and distribution of musculoskeletal pain.

Rapid Entire Body Assessment (REBA) analysis was conducted for high-risk working postures identified during the observational phase. REBA is a validated ergonomic assessment tool that scores body postures on a scale from 1 (negligible risk) to 15+ (very high risk requiring immediate action), accounting for trunk, neck, leg, upper arm, lower arm, and wrist positions.

Key Results

Prevalence of Musculoskeletal Complaints

The survey results revealed an extraordinarily high prevalence of musculoskeletal complaints among oil palm workers. Upper back pain was reported by 87.1% and lower back pain by 94.3% of workers performing FFB manual handling tasks. FFB cutters and loose fruit collectors consistently reported the highest levels of body pain across multiple body regions.

Pain complaints extended beyond the back to include the shoulders, neck, knees, and wrists — reflecting the full-body demands of plantation work. The combination of overhead reaching (for tall palms), stooped postures (for younger palms), heavy lifting, and repetitive motions creates a constellation of ergonomic risk factors that affect virtually every major body region.

The Knowledge-Practice Paradox

A particularly concerning finding was that 81.4% of workers demonstrated adequate awareness of correct manual handling techniques, yet the overwhelming majority continued to work in postures that contradicted this knowledge. This discrepancy points to systemic barriers — including production pressure, inadequate rest breaks, poor tool design, and the physical impossibility of maintaining ergonomic postures with current equipment — that prevent workers from translating their safety knowledge into practice.

REBA Assessment Results

The REBA analysis of observed working postures confirmed that FFB loading activities — particularly the manual lifting and throwing of heavy bunches onto transport vehicles — posed the highest ergonomic risk, scoring in the “very high” risk category that warrants immediate corrective action. Harvesting postures, while variable depending on palm height, consistently fell in the “high” to “very high” risk categories.

Implications for the Malaysian Palm Oil Industry

The findings underscore an urgent need for ergonomic intervention in the Malaysian palm oil sector. The authors recommended that plantation management take immediate action to determine the current prevalence of ergonomic injuries and implement corrective measures. Specifically, the study called for the replacement of manual tools with ergonomically designed machinery that reduces awkward postures, heavy lifting, and repetitive strain.

From a policy perspective, the Malaysian Department of Occupational Safety and Health (DOSH) has guidelines for manual handling in workplaces, but enforcement in the plantation sector has been limited. Strengthening occupational health surveillance, mandating regular ergonomic assessments, and investing in mechanisation that is designed with worker comfort and acceptance in mind are priorities for the industry.

The human cost of ergonomic injuries extends beyond physical pain — chronic musculoskeletal disorders reduce productivity, increase absenteeism, and diminish quality of life for workers and their families. Given that many plantation workers are migrant labourers with limited access to healthcare and compensation, the ethical imperative for industry action is particularly strong.

Limitations

The study did not specify the exact number of workers surveyed or the specific plantations involved, limiting assessment of sampling adequacy. The cross-sectional design captured a snapshot of musculoskeletal complaints without establishing temporal patterns or causal relationships. Self-reported pain data may be influenced by cultural factors and willingness to disclose symptoms. The study did not assess the effectiveness of any specific interventions, and comparative data from mechanised plantations were not available.