Occupational Health and Safety Management and Worker Productivity: Evidence from Petroleum Servicing Companies in Port Harcourt

This research investigates the relationship between occupational health and safety (OHS) management practices and worker productivity among petroleum servicing companies in Port Harcourt, Rivers State, in Nigeria's South South geopolitical zone. The oil and gas servicing sub-sector, characterised by high-risk operational environments, provides a compelling context for examining how safety culture and compliance behaviours influence workforce output. The study employs a descriptive survey design, with primary data collected via structured questionnaires administered to 160 workers and safety officers across six purposively selected firms. Frequency tables and chi-square statistics are used to analyse the data. Findings reveal that companies with ISO-certified safety management systems report significantly fewer workplace incidents and higher productivity indices than non-certified counterparts. The study also identifies inadequate personal protective equipment provision, poor incident reporting culture, and limited safety training as persistent deficiencies across several firms. These findings resonate with recent international literature on the business case for proactive OHS investment. The study recommends mandatory OHS audits, worker participation in safety committees, and enhanced regulatory enforcement by the Department of Petroleum Resources. By providing data from the South South zone, this research fills an important gap in Nigerian HRM literature, where OHS-productivity linkages in extractive industries remain underexplored. Keywords: Occupational Health and Safety, Worker Productivity, Petroleum Industry, Port Harcourt, Safety Management.