Slacker is a 10 minute duration debuff received from leaving a partial dungeon. You can still leave the dungeon without getting the debuff if you haven't started the first section.
While under the effects, items will lose durability 4 times as fast.
The icon can be clicked to pay off the debuff. The cost is proportional to the remaining minutes, and appears to be level dependent.
- At level 2, it costs 20 per remaining minute
- At level 28, it costs 550 per remaining minute
The timer only counts down while logged in.