Thanks to Pessi76. For ICT Folks, you just have to satisfy option (a), no confusion on Job Offer now.
As per the Canada Gazette Ministerial Instructions Amending the Ministerial Instructions Respecting the Express Entry System, 2016-1. It says either (a) or (b).
Qualifying offer of arranged employment
(2) A qualifying offer of employment is one of the following:
(a) an arranged employment as defined in subsection 82(1) of the Regulations, if
(i) the offer is supported by a valid assessment — provided by the Department of Employment and Social Development at the request of the employer or an officer and on the same basis as an assessment provided for the issuance of a work permit — that the requirements set out in subsection 203(1) of the Regulations with respect to the offer have been met,
(ii) the foreign national holds a valid work permit, the offer of employment is made by an employer for whom the foreign national currently works and who is specified on the work permit, the work permit was issued based on a positive determination made by an officer under subsection 203(1) of the Regulations with respect to the foreign national’s employment with that employer in an occupation that is listed in Skill Type 0 Management Occupations or Skill Level A or B of the National Occupational Classification matrix and the assessment provided by the Department of Employment and Social Development on the basis of which the determination was made is not suspended or revoked, or
(iii) the foreign national holds a valid work permit issued under the circumstances described in paragraph 204(a) or (c) or section 205 of the Regulations, the offer is made by an employer who is specified on the work permit and the foreign national works for that employer and has accumulated at least one year of full-time work experience, or the equivalent in part-time work, over a continuous period of work for that employer;
(b) an offer of continuous full-time employment for a total duration of at least one year from the day on which a permanent resident visa is issued in a skilled trade occupation as defined in subsection 87.2(1) of the Regulations that is made to the foreign national by up to two employers, neither of which is an embassy, high commission or consulate in Canada or an employer referred to in any of subparagraphs 200(3)(h)(i) to (iii) of the Regulations if
(i) the offer is supported by a valid assessment — provided by the Department of Employment and Social Development at the request of one or two employers or an officer and on the same basis as an assessment provided for the issuance of a work permit — that the requirements set out in subsection 203(1) of the Regulations with respect to the offer have been met,
(ii) the foreign national holds a valid work permit, the offer is made by up to two employers who are specified on the work permit, the foreign national currently works for one of those employers, the work permit was issued on the basis of a positive determination by an officer under subsection 203(1) of the Regulations with respect to their employment with their current employer, the assessment by the Department of Employment and Social Development on which the determination is based is not revoked or suspended, and the offer is in a skilled trade occupation that is in the same minor group set out in the National Occupational Classification as the occupation specified on the work permit, or
(iii) the foreign national holds a valid work permit issued under the circumstances described in paragraph 204(a) or (c) or section 205 of the Regulations that specifies the employer or employers that made the offer, and the foreign national works for an employer specified on the permit and has accumulated a total of at least one year of full-time work experience, or the equivalent in part-time work, over a continuous period of work for the employers who made the offer.
Courtesy - http://www.cic.gc.ca/english/department/mi/express-entry.asp