Laborious

[Tina]

Requiring labor, perseverance, or sacrifices; toilsome;
tiresome.

[Britney]

When one is intoxicated to the point of becoming work for those around them.

[Greta]

[Industrious]
[Marked] by or requiring long, [hard work]

[Monty]

needing a lot of time and effort:

[Greta]

(especially of a task, process, or journey) requiring considerable effort and time.