A growing number of employers are adding a controversial element to their job applications: a waiver in tiny print that says employees can sue the company only within six months of a particular incident. That waives their rights to any contrary statute of limitations provided under state and federal laws, a tactic that is stirring yet more workplace controversy and litigation.

Management-side lawyers see the waivers as a good tool to help employers better manage lawsuits in a more predictable fashion, and ward off more claims by giving people less time to sue. But the tactic has employee-rights attorneys reeling.