What differentiates one from the other is education. An unskilled labourer could be anyone from a traditional agricultural worker to someone working in the modem sector but doing menial tasks or otherwise engaged in providing some low value added services, often with little education. On the other hand, to be a skilled worker one has to undertake comparatively more—sometimes a lot more—education, involving considerable human capital investment. Note that this categorization of skilled and unskilled worker cannot but be left somewhat vague. In the early phases of development, an unskilled (in most cases, mral) labourer may well be illiterate.