I'm not sure about the husky part of your dog but as for the lab...
You never shave a Lab for maintenance. NO! NO! NO! NO! The ONLY reason to shave anything on a Lab is:
For a Hot Spot
If you dog is having surgery, let the vet shave the area that needs to be shaved. If you see a hot spot, then yes you need to shave the area where the hot spot is to keep it from spreading. Shaving a Lab for routine maintenance is just WRONG.
Some people feel they must shave their Lab because all that hair must make the dog hot. WRONG. The undercoat actually keeps the dog cooler.
Some people feel if they shave their Lab they can keep the dog from shedding. WRONG. The dog will still shed. Shedding is natural for a Lab. What it will do is instead of shedding normal undercoat which is fluffy and soft, the dog will shed short, prickly hairs which will poke your skin if you make contact. Short, prickly hairs hurt.
Please don't shave your Lab. Groom it thoroughly instead. Your dog will thank you. Besides, your dog won't be the laughing stock of the neighborhood either.
Don't be lazy. spend the time to brush your dog daily and the shedding won't be so bad.