MoneySavingExpert Chair, Martin Lewis · Editor, Marcus Herbert
We'd like to remind Forumites to please avoid political debate on the Forum. This is to keep it a safe and useful space for MoneySaving discussions. Threads that are - or become - political in nature may be removed in line with the Forum’s rules. Thank you for your understanding.

# Job interview

Posts: 1,904 Forumite
Hi.

I have a job interview.

It is for a job with a 3 on 3 off 12hr shift pattern.

Can some of you maths wizards tell me the average weekly hrs worked please.

• Posts: 2,485 Forumite
edited 28 March 2022 at 2:42PM
Assume over 7 days a week...? If so, it works out that you have a six week shift pattern, then you're back to the start and repeat the six week pattern again. In that six weeks you've got 21 'on' shift days and 21 'off' days.

So 21 (shifts) by 12 (hours per shift) divided by 6 (the overall week pattern) gives an average of 42 hours a week.

Worth noting, this is actually 3 weeks with 4 days worked, and 3 weeks with 3 days worked.

Hope that helps - let me know if it doesn't make sense!

• Posts: 5,007 Forumite
edited 28 March 2022 at 2:57PM
I would calculate as using
365 days/year
6-day cycle
=60.8333333 cycles in a year
So 36 hours/cycle = 2190 hours/year
= 42.115 hours/week (that's including holidays)

• Posts: 149 Forumite
It’s interesting to see the different calculations for this. The simplest is you work 50% of the year (3 on 3 off) so (365/2)*12 = 2190 hours a year. 2190 / 53 = 42.1 hours a week
• Posts: 12,520 Forumite
And I would have calculated 36 hours in 6 days - multiply by 7/6 to get from 6 days to a week = 42.
But a banker, engaged at enormous expense,
Had the whole of their cash in his care.
Lewis Carroll

#### Categories

• All Categories
• 345.8K Banking & Borrowing
• 251K Reduce Debt & Boost Income
• 451K Spending & Discounts
• 237.9K Work, Benefits & Business
• 612.7K Mortgages, Homes & Bills
• 174.3K Life & Family
• 251K Travel & Transport
• 1.5M Hobbies & Leisure
• 16K Discuss & Feedback
• 15.1K Coronavirus Support Boards

## Is this how you want to be seen?

We see you are using a default avatar. It takes only a few seconds to pick a picture.