Until moern industrialized times, legal and cultural practices, combined with the inertia of longstanding religious and educational traditions, have restricted women's entry and participation in the workforce. Economic dependency upon men, and consequently the poor socio-economic status of women have also restricted their entry into the workforce. Particularly as occupations have become professionalized over the nineteenth and twentieth centuries, women's meagre access to higher education has effectively excluded them from the practice of well-paid and high status occupations. Entry of women into the higher professions like law and medicine was delayed in most countries due to women being denied entry to universities and qualification for degrees. For example, Cambridge University only fully validated degrees for women late in 1947, and even then only after much opposition and acrimonious debate. Such factors have largely limited women to low-paid and poor status occupations for most of the 19th and 20th centuries. However, through the twentieth century, public perceptions of paid work shifted as the workforce increasingly moved to office jobs that do not require heavy labor, and women increasingly acquired the higher education that led to better-compensated, longer-term careers rather than lower-skilled, shorter-term jobs.