I can’t think of an occasion where I would wear jeans to work. But that does not mean that there not a situation when this may be appropriate. I would personally love to wear a skirt or trouser suit and blouses. But actually dress smart casual without jewellery etc because of the high levels of deprivation in the area I work. I happily get down on the floor to weigh measure or even play with children without the fear of damage. I take a jacket to professional meetings and keep the jewellery for study days and home.