Rob_Corsa
Member
Registered: 4th Apr 02
Location: Derbyshire
User status: Offline
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Can someone help me work the following out as an effeciency figure.
Basically in work I supervise 3 people who produce work in an Electronis Manufacturing company. We build a variety of products each week, all of which have previously had their build times worked out. Each week we are given a schedule of work to complete and the following week I am told the efficiency for the previous week, what I dont get to see is how its worked out(and even if its done correctly) so I'm wanting to do it myself, or at least with someone's help 
This is the information from this week(4 people)
126.75 man hours basic(6.5 hrs/day, 4 people, 1 had half day(3.25hrs off) )
11 Hours overtime were required to complete the scheduled work(in theory according to timings)
27 Hours overtime were actually done.
3.25 hours of holiday taken(not scheduled for)
8 Hours were lost due to being sent home because of snow.
28.25 hours extra work completed done on top of scheduled work.
Can someone please show me how to work this out as an efficiency please.
Thanks
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Ian
Site Administrator
Registered: 28th Aug 99
Location: Liverpool
User status: Online
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Time it should have taken / time it took.
Over 100% would mean you have worked quicker than the plan.
Under 100% would mean the time taken is higher.
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Ian
Site Administrator
Registered: 28th Aug 99
Location: Liverpool
User status: Online
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Add on your overtime at whatever cost to the company, ie. double time, add it twice.
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taylorboosh
Member
Registered: 3rd Apr 07
User status: Offline
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Target is usually 70%
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Rob_Corsa
Member
Registered: 4th Apr 02
Location: Derbyshire
User status: Offline
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Overtime rates dont get taken into acount, just hours worked and hours of work completed.
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taylorboosh
Member
Registered: 3rd Apr 07
User status: Offline
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126.75 + 11 = 137.75 = time it shouldve taken
126.75 + 27 = 153.75
8 + 3.25 + 28.25 = 39.5
153.75 - 39.5 = actual time worked = 114.25
137.75 / 114.25 = 1.206 = 120.6% efficient
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taylorboosh
Member
Registered: 3rd Apr 07
User status: Offline
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Hope fully you can follow that
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Ian
Site Administrator
Registered: 28th Aug 99
Location: Liverpool
User status: Online
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Does the overtime not cost the company more than normal man hours though?
Would skew the efficiency figures if you don't count the cost to the company, otherwise you're just taking about hours and not money and while the former is useful, its not the full story.
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taylorboosh
Member
Registered: 3rd Apr 07
User status: Offline
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Yes over time should most likely be worked at x1.5 but i cba on a phone to re do it, anyway, it would only be worked as x1.5 if he was as you say working for cost purposes however he is doing it to see productivity. His lads cant be expectef to do x1.5 the work because they are on OT
But as you stated its just hours theyre on about then the above is correct.
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Rob_Corsa
Member
Registered: 4th Apr 02
Location: Derbyshire
User status: Offline
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yes the overtime does cost the company more but this is just about the teams performance.
Thanks for working that out taylorboosh, the way I'd done it initially was with the 28.25 hrs extra work included on the top line as well but wasnt sure if it was correct. My thinking was that i'd have to assume that the 28.5 hours of extra work should have taken 28.5 hours.
Rob
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taylorboosh
Member
Registered: 3rd Apr 07
User status: Offline
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If it wasnt planned in on schedualled hours it basicly accounts for your OT anyway
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