The study aimed to determine the levels of work rumination and marital psychological availability, uncover the predictive capacity of work rumination on marital psychological availability, and examine differences in intervening variables among a sample of 302 married oil engineers in Muscat Governorate, selected randomly. By employing a descriptive approach with both correlational and comparative aspects, the study applied the Work-Related Rumination Scale developed by Cropley et al. (2012) and the Psychological Availability Scale by Danner-Vlaardingerbroek et al. (2013). The results showed that the level of work rumination among oil engineers was high, whereas the level of psychological availability was low. Additionally, the study revealed an inverse relationship between work rumination after work hours and psychological availability among married individuals. Statistically significant differences were found in psychological availability levels attributed to educational qualifications, favoring diploma holders, and years of marriage, favoring those married for less than five years. Furthermore, there were differences in work-related rumination levels with an increase in the number of children and psychological availability with a decrease in the number of children. The study also provided recommendations, including urging oil companies to implement incentive and recognition programs to enhance positive spirit and appreciate employees' efforts within the company, and to offer policies and programs that enhance employees' psychological availability through flexible work, paid leave, or family leave to support employees.