There are books about this![0]
> Why would anyone hire someone just to make sure they stayed busy?
1) flunkies, who serve to make their superiors feel important, e.g., receptionists, administrative assistants, door attendants, store greeters, makers of websites whose sites neglect ease of use and speed for looks;
2) goons, who act to harm or deceive others on behalf of their employer, e.g., lobbyists, corporate lawyers, telemarketers, public relations specialists, community managers;
3) duct tapers, who temporarily fix problems that could be fixed permanently, e.g., programmers repairing bloated code, airline desk staff who calm passengers whose bags do not arrive;
4) box tickers, who create the appearance that something useful is being done when it is not, e.g., survey administrators, in-house magazine journalists, corporate compliance officers, quality service managers;
5) taskmasters, who create extra work for those who do not need it, e.g., middle management, leadership professionals
[0] https://en.wikipedia.org/wiki/Bullshit_Jobs