“The two most common approaches to calculating access and custody time are in days, and in hours. If using days, to reach 40 per cent, the access parent must have the child in his or her care for 146 days per year (Handy v. Handy, [1999] B.C.J. No. 6 (S.C.). When calculating in hours, the 40 per cent threshold lies at 3504 hours per year (Claxton v. Jones, [1999] B.C.J. No. 3086 (Prov. Ct.)).
In his paper, “A Practitioner’s Guide to the Economic Implications of Custody and Access under the Divorce Act and the Federal Child Support Guidelines”, Julien D. Payne points out that no matter how the calculation is completed, the relevant period is the amount of time the child is in the care and control of the parent not the amount of time that the parent is physically present with the children ((2002) 32 R.G.D. 1-36, at 8). The calculation includes the time the child spends in swimming lessons, at day care, at school, or with a nanny, so long as the parent claiming this time is the parent who during that period is “responsible for their well-being” (Sirdevan v. Sirdevan, [2009] O.J. No. 3796).
In line with this approach, a custodial parent will be credited with time that a child spends sleeping or at school, except for those hours when the non-custodial parent is actually exercising rights of access or the child is sleeping in the non-custodial parent’s home (Cusick v. Squire, [1999] N.J. No. 206 (S.C.)). If there is a fixed drop-off time for the access parent to deliver the child to school or daycare and the child returns to the custodial parent at the end of that day, the time during school or daycare is typically credited to the custodial parent (Maultsaid, at para. 20; Barnes v. Carmount, 2011 ONSC 3925, [2011] O.J. No. 3717, at para. 43).”