Sounds like you need a cattle prod or taser gun. Tell your husband that you are not the slave and that when you signed up for marriage it was supposed to be a 50/50 contract, not 90/10.
Have your husband lay down on the floor with your son in a baby proof, gated area. That way he can sort of fade in/out with baby crawling all over him.
When he comes home, take a break. Hand him baby and go grocery shopping by yourself or go lay down and take a nap. Say It is your turn. Constantly tell baby that he is 50 percent daddy and 50 percent Mommy and that you love him equally. Be sure to say this deliberately in front of your husband so that he gets a hint.
Sometimes I will send my boys on errands with dad so I can have a quiet house to do my chores. I tell my husband that it is father/son bonding time and everyone thinks a dad with a baby looks so cute. Make sure baby is dressed in a cute outfit. Tell your husband how much the baby looks so handsome like his daddy and wouldn't he like to show him off.
Assign chores to your husband. My husband usually will do the dishes and the laundry. Tell him that you are having back pain and you need his big strong and sexy muscles to help with some of the heavier chores like mowing the lawn. Be sure to thank him when he does do some chores and tell him how lucky you are to have such a strong, sexy, and sweet provider to help you and the baby. Be sure to reward him affectionately when he does a chore. (positive reinforcement) Men eat this stuff up typically.
If this doesn't work, and if he is not obsessive, you can always make him a little jealous by comparing him to your friends husbands, relatives, etc. Once, I befriended the bachelor next door and recruited him to help me paint while my husband was at work. My husband came home and saw that I had another man helping me. When he would complain about doing chores I would just say "Don't worry about it, Jason said that he would help me anytime, I will call him tomorrow.
Sincerely,
A. Rupert