Hi Munchies 101,
The answer is, as always,
it depends. Admissions directors are often much more interested in the quality of work experience rather than the number of years of experience. They are looking for promotions, taking on new responsibilities, ways you have shown leadership on and off the job.... the list of variables is quite endless.
It also depends on what you are learning day to day: If you are working at a health insurance company that is going through changes, how have you managed the change? Or have you had a huge challenge that you did well at or learned a lot from? The admissions officers are putting themselves in the shoes of your potential classmates: what are you going to add after this amount and quality of work experience?
It might be after doing this self-inventory, you may decide you need to round out your leadership experience by leading a team, inside or outside the office. If there’s no easy opportunity in the workplace, you can look to your community or entrepreneurial activities to round things out. Remember to push your own limits – show that you know how to do something that goes beyond what is required.
I always find that going to the Student2Student forum on the Wharton Engage website a sane way to get some more insight on work experience questions. Victor Lee, Wharton '11, is a sage advisor on the process. Here's his answer to someone asking about their own work experience:
https://engage.wharton.upenn.edu/MBA/for ... .aspx#8386There's no easy answer, but it's great that you are thinking about and researching the process. Best of luck!