Paragraph 21 also stipulates that a material change shall
be deemed to exclude the wife earning business or employment
income of up to $30,000 per calendar year or the husband earning up to $145,000 per calendar year.
 Significantly, para. 21 acknowledges that the husband’s
“cessation of employment prior to age 65 may constitute a material change in circumstances”. Paragraph 21(a) states:
21. A material change in the condition, means, needs or other circumstances
of the parties or Children may be foreseen, unforeseen, foreseeable or
unforeseeable, and may include:
(a) a material change in either party’s financial position. The parties
acknowledge and agree that at the present time, the Husband is
intending to continue to work at Nuclear Safety Solutions Ltd.
until he turns age 65 ( i.e. August 1, 2024), notwithstanding he will
be eligible to retire early from Nuclear Safety Solutions Ltd. on an
unreduced pension effective on and after August 1, 2012. For the
purposes of determining if a change in the quantum of periodic
spousal support payable by the Husband to the Wife from and
after August 1, 2012 to August 1, 2024 is warranted pursuant to
paragraph 17 above, the parties acknowledge and agree that the
Husband’s cessation of employment prior to age 65 may constitute
a material change in circumstances.
(f) The separation agreement: release of pension rights
 Paragraph 33 of the separation agreement provides that,
“[e]xcept as otherwise provided in this agreement . . . neither the
Husband nor the Wife shall be entitled to share or to receive any
benefits . . . in respect of, any pension of the other . . .”.
 Paragraph 34 stipulates that each party is entitled to sue
the other for pension benefits received contrary to the terms
of the separation agreement.
 The full text of paras. 33 and 34 are set out in Appendix
“A” to these reasons
(g) Prior amendments to the support provisions of the
 The parties agreed to amend the support payable under
the separation agreement in 2009 and 2011.
 By consent order dated September 15, 2009, child support
was increased to $2,000 per month and spousal support was
increased by $500 per month, plus $150 per month upon the
parties’ divorce to replace the medical benefits formerly available to the wife.