Martha Medina is a mother and a warehouse worker in San Bernardino, California.

Here is her Mother's Day message:

"I came to this country to help support my mother. From the second you first open your eyes as a newborn you see your mother. She gives you the strength and wisdom to live. Now I support my mother and my two sons as well as my nieces and nephews.

"It hasn't been easy. Temperatures inside the warehouse are high, there is a lot of pressure to work fast, conditions are dangerous and pay is low. Our work is unreliable. I worked through my pregnancy with my second child. There was no respect for my pregnancy and I was constantly worried.

"Pero Madres Son Luchadores, Como Yo."