Today we'll take a closer look at China Life Insurance Company Limited (HKG:2628) from a dividend investor's perspective. Owning a strong business and reinvesting the dividends is widely seen as an attractive way of growing your wealth. On the other hand, investors have been known to buy a stock because of its yield, and then lose money if the company's dividend doesn't live up to expectations.

With China Life Insurance yielding 5.0% and having paid a dividend for over 10 years, many investors likely find the company quite interesting. It would not be a surprise to discover that many investors buy it for the dividends. Before you buy any stock for its dividend however, you should always remember Warren Buffett's two rules: 1) Don't lose money, and 2) Remember rule #1. We'll run through some checks below to help with this.

Explore this interactive chart for our latest analysis on China Life Insurance!

Payout ratios

Dividends are usually paid out of company earnings. If a company is paying more than it earns, then the dividend might become unsustainable - hardly an ideal situation. As a result, we should always investigate whether a company can afford its dividend, measured as a percentage of a company's net income after tax. Looking at the data, we can see that 36% of China Life Insurance's profits were paid out as dividends in the last 12 months. A medium payout ratio strikes a good balance between paying dividends, and keeping enough back to invest in the business. Besides, if reinvestment opportunities dry up, the company has room to increase the dividend.

Remember, you can always get a snapshot of China Life Insurance's latest financial position, by checking our visualisation of its financial health.

Dividend Volatility

From the perspective of an income investor who wants to earn dividends for many years, there is not much point buying a stock if its dividend is regularly cut or is not reliable. For the purpose of this article, we only scrutinise the last decade of China Life Insurance's dividend payments. The dividend has been cut on at least one occasion historically. During the past ten-year period, the first annual payment was CN¥0.23 in 2010, compared to CN¥0.73 last year. Dividends per share have grown at approximately 12% per year over this time. China Life Insurance's dividend payments have fluctuated, so it hasn't grown 12% every year, but the CAGR is a useful rule of thumb for approximating the historical growth.

It's not great to see that the payment has been cut in the past. We're generally more wary of companies that have cut their dividend before, as they tend to perform worse in an economic downturn.