Comment by 1penny42cents

An addiction is when our dependency an activity outweighs the net-negative effect of it.

If there’s no net-negative, there’s no addiction.

So yes, some people just enjoy working. Others are workaholics. It’s not all-or-nothing and the evaluation depends on how you calculate the net impact of work on the person’s life.

What OP was calling out is that chronically sacrificing sleep seems to consistently take its toll down the road. So chronically enjoying work at the expense of sleep can be a form of workaholism.