Home/Compensation vs. Burden Compensation vs. Burden
Compare payment against the full schedule, unpaid time, restrictions, and reimbursement rules before deciding whether a study is worth screening for.
Calculate the full time load
Start with the time you can see: number of visits, estimated visit length, drive time, parking, check-in, waiting, procedures, and checkout. Add the time that often sits outside the visit: fasting preparation, medication holds, diary entries, phone calls, symptom checks, device syncing, sample collection, and final follow-up.
A study with short visits can still be hard to complete when the visits are early, fasting, weekday-only, repeated weekly, or tied to narrow dosing windows. Ask for a sample visit calendar before you agree to screening.
Burden categories
- Travel: miles, traffic, parking, weather, public transit, ride-share access, and the risk of return trips.
- Schedule: weekday visits, early mornings, fasting windows, dosing windows, and required follow-up dates.
- Procedures: blood draws, ECGs, imaging, biopsies, physical exams, device checks, or observed dosing.
- Restrictions: alcohol, caffeine, smoking, exercise, medication changes, diet, contraception, or sleep schedule.
- Home tasks: diaries, apps, wearable devices, symptom logs, sample collection, or phone check-ins.
- Payment lag: delayed payment, completion bonuses, reimbursement processing, or vendor card issues.
Worksheet
- Total advertised payment: ______
- Screening payment: ______
- Number of in-person visits: ______
- Total drive time per visit: ______
- Estimated unpaid hours: ______
- Out-of-pocket travel before reimbursement: ______
- Completion bonus amount and conditions: ______
- Payment issue date after each visit: ______
Payment structure matters
A $1,200 total payment divided across eight visits with a delayed completion bonus may create more strain than a lower-paying study with fewer visits and prompt per-visit payments. Ask for the payment schedule in writing or take careful notes during the call.
Ask what happens if the site cancels a visit, the sponsor closes enrollment, your lab values exclude you after screening, or you withdraw because of symptoms. These situations affect payment and reimbursement differently depending on the protocol and site policy.
Estimate hourly reality
Divide the expected payment by the total time, not only the time inside the clinic. Include driving, parking, waiting, fasting preparation, phone calls, diary entries, and follow-up tasks. Then subtract likely out-of-pocket costs that are not clearly reimbursed. This estimate will not be perfect, but it will expose studies where the headline payment depends on unpaid work outside the visit.
Low-burden signs
Clear schedule, few visits, prompt per-visit payment, separate travel reimbursement, minimal restrictions, short follow-up, and no complex home tasks.
Higher-burden signs
Overnight stays, dosing days, repeated blood draws, narrow visit windows, fasting labs, medication washouts, long diaries, delayed payment, or completion-only bonuses.
Costs that change the math
CALCULATEEstimate the study by visit, not by headline payment. A fasting lab at 7:00 a.m. may require waking early, arranging transportation, skipping breakfast, and missing a work shift. A short visit can still cost half a day if the site is far away or parking is slow. A follow-up phone call can become a problem if the call window overlaps work, school pickup, or another appointment.
Ask whether the study pays for partial completion, whether reimbursement requires receipts, whether mileage has a cap, whether missed visits reduce payment, and whether payment is delayed until the final visit is complete. If a completion bonus is large, calculate the amount you would receive if you stop early or screen out after labs.
