The labour market is increasingly demanding higher skill levels in science, technology, engineering and math (STEM). And, the market is paying women above-average wages in these fields. It will be difficult to narrow the overall gender wage gap if women fail to make stronger inroads into STEM fields. Aptitude differentials in math among girls and boys as the source of women underrepresentation in STEM has been debunked many times over. The causes are numerous and complex but include marginalization within educational and corporate institutions. Within the workplace, employers need to revisit whether ongoing marginalization is present. Women who acquire a degree in STEM are disproportionately slotted into lower paying technical roles.