>>132118
If you're a labourer in a physical field that has never gone to the gym this is not uncommon.
It's really an example of SAID. Your body has likely adapted to picking shit up in that work environment and drawing shit up from the ground is a pull oriented movement structure. Your body will adapt to pull weight.
It won't take long in the gym for your body to balance out in these movement patterns. There is simply more and larger muscle groups involved in pushing with regards to the upper body.
There is no "supposed to be" in strength or fitness, there is only where you are right now and where you are training to be.