Tech companies that don’t yet turn a profit are doling out benefit packages worth over $100,000 per employee. According to their investors, this is good for their bottom lines, not just their consciences.

Tech companies have been at the top of the benefits game for years now. Netflix turned heads in 2015 when it began offering employees as much as a full year of paid child leave—not just for women, but for all new parents. Fertility coverage is the latest big thing, with use of in-vitro fertilization growing 71% nationally...