Research is to determine the differences in motivating workers to performance in UK and Nigeria?

The guiding principle of my research is to determine the differences in motivating workers to performance in UK and Nigeria? In order to draw the most accurate picture, I will particularly examine the following issues: Is workers salaries/wages in both countries enough motivation with regard to performance How do workers in both countries perceive the relationship between hard work and growth/promotion What motivational factors would improve the employees productivity How is motivation implemented and monitored in both countries