Depends.

If you are looking to work in medical devices and it is a well established company such as a conglomerate like Johnson and Johnson, then you don’t need to worry about their stability or financial history since it is been around for years. In terms of stock price and revenue, this is a very small part of indicating how well a company is doing for certain periods of time. If you want a quick glance at what working for a company would be like or owning ownership of the company I personally look at the companies yearly dividends. See if they have historically increased their dividend yield over the years. If they have increased their dividend yield on a yearly basis then they are doing a very good job of appeasing the shareholders. I would strongly suggest that working for a company like this is very low risk of personally affecting you.

If you are in partnership, you and your partner assume all risk. Therefore, there is no corporate veil to protect you when someone goes after you for whatever reason. However, one of the advantages of the partnership is you can easily split all profits. If I was coming in as a partner, my acceptance as a partner would depend on the company or what the business model is. If it doesn’t spark an interest in me or I don’t see any potential in it such as a viable cash flow then I wouldn’t take that type of job.