The answer is relative: it all depends on what you've done and for how long. Here are some examples of helpful vs. common work experiences:
1) After 30 years in the workforce, Jane Smith decides that law school is an interest/or is needed to further her career.
2) Because Joe Smith can't get into law school, he decides to work as a paralegal for a year to "bolster" his application.
If your "experience" is similar to that of Jane and you can tell a good story, go for it (and use it). If, on the other hand, you think that by going Joe's route you will distinguish yourself from other candidates, don't count on it. Admission committees spot "interim" work experience and it doesn't mean jack sh*t to them- seriously. Work on your UGPA and LSAT score- they're critical to a successful application.