Open, and still new. We launched this week, and we're still building. If something doesn't work, feels unclear, or just seems off, tell us at admin@oncallsub.com. We read every message and reply.

OnCallSub — We'll be there!

Need an instructor today?

Post the class. Cover is on the way

New here? Set up as a studio or an instructor.

Great instructors, and the record to prove it

The background, without the phone interview

Who they trained with and when. How long the studio has been open. How many classes they teach or run each week. The context you'd normally spend time asking about.

The risk basics, in writing

Insurance and whether it's current. Whether clients sign waivers. Who to contact if something goes wrong. How and when payment is made. The details you want clear before the first class.

You see each other at the same time

When an instructor puts their hand up, both names and full records open at once. You see who they are, and they see who you are.

A record that builds itself

Show-up, on-time, would-rebook, class-as-described, late cancellations, and paid-on-time. Built from activity on OnCallSub — nobody types these in.

Everyone provides this information before they're listed. We don't check their answers — ask to see the original documents before the first class.

You shouldn't have to cancel the class

Instructors get sick. Cars don't start. Kids run a fever at seven in the morning. None of that is anyone's fault and all of it lands on you at the worst possible hour.

One Sub goes to everyone nearby — all of them, at once. You're not phoning down a list hoping somebody says yes. And if nobody takes it, we look further out before the class starts, and tell you either way. Emailing forty clients at five o'clock should be the last thing that happens, not the first.

Anonymous until someone puts their hand up

Posting a Sub shouldn't tell every studio in town when you're short-staffed. Putting your hand up shouldn't mean committing before you know who you're dealing with. So names stay hidden while a Sub is open. When an instructor puts their hand up, both sides see each other's name and full record at the same time, and either side can start a chat. The studio then chooses who to confirm — that confirmation is the commitment. Once confirmed, the practical class details are shared: the exact address, manager's mobile and access information.

  1. Names hiddenNeither side is named
  2. Hand upThe instructor says they're interested
  3. Both revealedEach side sees the other's name and how they've done here, and either can start a chat
  4. ConfirmThe studio picks one. Until then, either side can walk away
  5. DetailsThe exact address, manager's mobile, access information

If either side cancels after confirming, we record what happened on the Passport — we don't collect the fee.

More than 12h before start
No fee expectedNothing recorded
4 – 12h before start
50% of posted payLate cancel within 12h
Under 4h before start
100% of posted payLate cancel within 4h
After the instructor checks in
100% of posted payCancelled after arrival

We don't hold money or collect these amounts. We record what happened, on a profile every future instructor can read. Until you confirm someone, either side can walk away and nothing is recorded.

What OnCallSub is, and isn't

  • A place to meet. Not an employer, staffing agency, or employment agent.
  • Confirming a Sub is an agreement between the studio and the instructor to cover one class. OnCallSub isn't a party to it.
  • Certifications and insurance are declared by their owner. There is nowhere to upload one, we don't hold them, and we don't check them.
  • Payment is arranged between the two of you. We don't process it or guarantee it.
  • See ID and originals in person before the first class.
Read the full terms
OnCallSub — We'll be there!

Studios fill the class. Instructors fill the day. Same page, both directions.