Se si tratta di una giornata intera, non hai una tariffa minima di tempo, ma devi stabilirne una. Se esci per un lavoro di mezz'ora, non farai soldi facendo pagare una mezz'ora. Hai bisogno di un minimo per pagare l'usura del veicolo e degli strumenti. Per una giornata di otto ore puoi dare una tariffa leggermente più bassa della tua tariffa oraria, se le otto ore sono garantite.

Siiiate specifici nella vostra fatturazione. Non fatturare: 6 ore di lavoro in giardino. Tieni il conto: Un'ora di potatura delle rose davanti alla casa. 1,5 ore per installare il rubinetto sulla parete ovest del garage. 2 ore di potatura delle azalee. Ecc.

I will discuss the old way, because I’m seeing a lot of variation in the market place. But essentially, the General Contractor:

1. Is the legal entity that has signed a contract with the owner regarding the delivery of a construction project, including an anticipated end date, and a construction cost. They are licensed in most jurisdictions. They carry the completion and payment bonds on the contract as well as liability insurance for the site and vehicles.
2. They interact with the local agencies, and procure the building permit, the electrical permit, etc. (sometimes the owner does this for expediency, its a contractual issue)
3. They hire the subcontractors on the project and are responsible for paying them.
4. They provide the shared services for the jobsite: the job site trailer office (which can consist of multiple buildings), the power, water, sanitary facilities, clean drinking water, arrange for crew parking, coordinate for street closures, etc.
5. They prepare the monthly billing, ascertaining the percentage completion of the construction and verify that the subcontractors have completed what they state on their billings.
6. The are in charge of job site logistics, storage of goods, and protection of both the built construction and the unused materials stored on site, scheduling deliveries and scheduling crews to work on specific portions of the project.
7. They are entirely in charge of the schedule of the project under construction.
8. They provide the site fencing and security.
9. They are the “responsible party” for OSHA and enforce safety regulations on the project site.
10. They interact with the owner, architect, engineers (design staff), the testing agencies and testing staff, inspectors and other agency personnel.
11. The enforce owner’s rules about staff hired on the jobsite, non-smoking provisions and the like.
12. They are responsible for daily clean up, trash removal and the overall safe environment of the site.
13. They are the signatory to the 1 year warranty on the completed construction.
14. They used to be in charge of coordination between adjacent trades, now it is more likely that they assign that coordination directly to the trades to work it out themselves.
15. The GC used to carefully review the scope of work of each subcontract to verify that there was no scope left out and no scope duplicated. This doesn’t always happen as well these days.

Their specific responsibilities and areas of responsibility are spelled out in the Owner/Contractor agreement (the contract). They can certainly delegate some of these tasks to subcontractors. I’ve listed the typical areas where the responsibility falls to the GC on the project. A construction manager may take on only some of these tasks — again, it is dependent on the contract.