Employability has been defined as "the capability of getting and keeping satisfactory work".
Employability skills have been defined as:
"A set of achievements, understandings and personal attributes that make individuals more likely to gain employment and to be successful in their chosen occupations". Peter Knight & Mantz Yorke (HEFCE/DfES ESECT group)
“A set of attributes, skills and knowledge that all labour market participants should possess to ensure they have the capability of being effective in the workplace – to the benefit of themselves, their employer and the wider economy.” CBI
You may also see these skills referred to as transferable skills (because skills developed in one area of your life can be transferred to other areas) or personal skills. In the context of your career planning and development, they are called career management skills.