Nothing set as a standard.
Some companies do offer such plans, or they did in better economic times.
Generally, in a professional position at a company, you will start with one or two weeks (5 day weeks) vacation and after a bit of service (varies with the company) you might get an additional day per additional year of service or an additional week after a longer service period, generally 5 years.
It all varies with the company and what you negotiate when you sign on.
There is some philosophy or 'work ethic' going on here that reasons that if they can do without you for an extended period, then they can do without you period, so often vacation goes unused.