Money is one of the major concerns for the majority of us and although we may already have a full time job, we still might not be getting enough to pay the bills. If you are in this situation you will probably think that you need to take on a second job. When taking on a second job you need to be aware of the tax implications. For example if you earn £15000 in your first job then any money you earn in your second job will be taxed as you will have used up your tax free allowance in the first job.
Often it is easier to extend your hours with your current company if possible so I would always suggest doing that first prior to searching for a new job.
Working two jobs can be a huge stress on your home life and your well being, so always make sure that you have adequate time off to recover and rest.