In the scriptural injunctions we find what sort of work should be performed and what sort of work should not be performed. Those who do not care for those injunctions engage in work not to be done, and such persons are generally materialistic. They work according to the modes of nature, not according to the injunctions of the scripture. Such workers are not very gentle, and generally they are always cunning and expert in insulting others. They are very lazy; even though they have some duty, they do not do it properly, and they put it aside to be done later on. Therefore they appear to be morose. They procrastinate; anything which can be done in an hour they drag on for years. Such workers are situated in the mode of ignorance.
Ref >> Srila Prabhupada Vani.