These days, there are persistent, ubiquitous, and dire warnings that their days are numbered.
Lawyers are far from immune from the threat of obsolescence. If you want to fight a parking ticket in the U.K. for example, from now on, you will probably go to this website before you will call a U.K. solicitor. And worldwide, you will probably take care of many legal matters via similar applications (forming companies, drafting wills, negotiating contracts, etc.).
So, take Labor Day off! Celebrate a day off and celebrate that you have a job (assuming you are one of the lucky ones). In years to come, the bitter irony is that many of us will not have the luxury of a job nor the treat of a day off.