difficult in a way that tests your abilities
challenging
to get money for doing a job
to earn
achieving a lot, and/or making a lot of money
successful
said you didn’t want a job any more
gave in my notice
a way of learning to do a job at the same time that you do it
on-the-job training
given a higher position
promoted
to work many hours every day
to work long hours
be paid for the days that you don’t work
get paid holidays
beginning a job (or series of jobs) that you might do for life
starting a career