The article looks at why men and women in the hospitality industry in Spain get paid differently. Instead of just looking at the overall gap, the researchers studied how this gap changes depending on how much people earn. They found that men tend to earn more than women, especially in higher-paying jobs. Discrimination against women in pay is highest in lower-paying jobs but decreases as wages go up. The main reasons for this pay gap are differences in education and job roles between men and women. This study suggests that women face barriers to moving up in their careers, known as the 'glass ceiling'.