Some schools have very fixed annual topics and schemes of work, already planned and laid out, resources already prepared to match. Teacher tweaks to fit own class. Doesn't take long, but very little teacher autonomy or creativity.
Other schools have no fixed annual topics or schemes of work, and work from National Curriculum objectives, building on current children's interests. All planning and resources done from scratch. Very time-consuming but lots of teacher autonomy and creativity.
Some schools expect weekly planning to be v detailed, almost script like, with information on how you are supporting/extending different groups and individual children, pre-teaching, precision teaching, SMSC, EAL, EHCP plans, differentiation etc, for every session, all on a set format that is handed in weekly. Others don't ask for any weekly planning, and leave its format up to individual teachers.
Some schools have very detailed, complex marking policies which see teachers marking 5 x 30 pieces of work everyday, with written comments, next steps, highlighted bits etc.
Other schools have verbal feedback policies designed to cut workload and free-up time for other things.
Some schools have lots of after school meetings, booster groups to run, club expectations. Some don't.
Some schools expect you to write reports and meet with parents every term.
Some schools do it once a year.
Workload varies HUGELY from primary school to primary school.