onerous

My household duties were not particularly onerous.

a weighty package); figuratively it describes what is onerous, serious, or important (

My duties weren't onerous; I only had to greet the guests. Somethingoppressive weighs one down in body or spirit, as by subjection to an overpowering natural influence or to the harsh or unjust exercise of power:

deal with onerous regulations

find the task onerous