Why would the needs of someone doing more hazardous work be higher? What do they need more food/housing/entertainment/luxury for? I guess more healthcare needs, but I don't think that is going to convince someone to do the hazardous work.

As soon as you reward because of the hazardous working environment, it is nolonger distribution based on needs of the individual, but based on demand for the job. Rewarding based on supply and demand is capitalistic, not communistic.

Note that I'm no supporter of either (or any) Ideology. I believe we should apply the concepts of different ideologies where they make the most sense. In this case, applying capitalism to attract people into undesirable jobs, makes sense.