Don’t put all your money in your employer’s company stock
The old mantra of diversification of the investments is still valid. An even bigger sin may be not to diverse and put all your money in the stock of the company you are working for.

The reason is unnecessary risk:
When the company stock tanks, it is likely because of serious problems inside the company, when there is trouble ahead for the company it is also a bigger chance you will lose your job. So there is a bigger risk that things will hurt twice as bad when things starts to go bad at your company.

A sudden downturn in the company’s fortunes could leave you without a job and a nest egg. A good example of the potential risk is the Enron workers who lost their jobs and their retirement accounts when that company went bankrupt.

A rule of thumb no more than 10% of your investment portfolio, including your retirement funds, invested in your company’s shares.