The Men's Movement is in part a struggle for the recognition of equality of opportunity with women, and for equal rights irrespective of gender, even if special relations and conditions are willingly incurred under the form of partnership involved in marriage. The difficulties of obtaining this recognition are due to the habits and customs recent history has produced. Through a combination of economic changes and the efforts of the feminist movement in recent decades, men in some societies now compete with women for jobs that traditionally excluded women. Some larger corporations have instituted tracking systems to try to ensure that jobs are filled based on merit and not just on traditional gender selection. Assumptions and expectations based on sex roles both benefit and harm men in Western society (as they do women, but in different ways) in the workplace as well as on the topics of education, violence, health care, politics, and fatherhood - to name a few. Research has identified anti-male sexism in some areas which can result in what appear to be unfair advantages given to women.