Many employers offer a contribution to your retirement plan. In the US it is called a work sponsored 401(k), in the UK it is a personal pension plan – PPP.
How does it work and why use it?
tax relief – money goes to your personal pension plan or 401(k) account before you pay tax from them,
your employer’s contribution – extra money you receive from your employer to your retirement plan if you decide to save your money for retirement.