From the recent update (IWBUMS - IWILLBACKUPMYSAVE) Early Access V31.6. I am experiencing this problem too. Since the levels for all the skills went from 5 to 10. I have a XP multiplier of 3 on my level 0- carpentry, yet barricading windows, sawing logs only give 1 experience. The level multiplier is not working. Also Can not 'build' anything at this level since I am zero. So have to saw/barricade 75 logs and windows to get to the first level. Chopping, carrying, sawing about 5-6 logs usually exhausts me, so I have to go and rest, then repeat the process. Hopefully there is a fix that does not destroy my game. 1 month, 24 days and 10 hours so far into my survival game and only got my first Axe 6 days ago after 700+ zombies killed. A harder feat with the overbearing exhaustion system, where I could pretty much only kill 5-6 zombies early game and become exhausted until i rested. Have resorted to using Hammers since they seemed to not give me the quick exhaustion that the baseball bats (which i have not found hardly any. only two in the first month) Sorry long post, but yeah to the original poster, this is not how it should be ( Putting reality aside since this is a game, and previously the mutlipliers did work) I don't mind the exhaustion system, but we need the level multipliers running asap. New players will get very frustrated and not bother playing. I have been playing for almost 2 years, so i realise, expect the bugs and the restarts, plus it is fun to restart and raid the larders and pantries then go OH no power! NOOOO no water!